
Shanhui Fan
Director, Edward L. Ginzton Laboratory, Professor of Electrical Engineering, Senior Fellow at the Precourt Institute for Energy and Professor, by courtesy, of Applied Physics
Bio
Fan's research involves the theory and simulations of photonic and solid-state materials and devices; photonic crystals; nano-scale photonic devices and plasmonics; quantum optics; computational electromagnetics; parallel scientific computing.
Academic Appointments
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Professor, Electrical Engineering
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Senior Fellow, Precourt Institute for Energy
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Professor (By courtesy), Applied Physics
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Member, Bio-X
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Affiliate, Precourt Institute for Energy
Honors & Awards
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Fellow, IEEE (2010)
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Fellow, SPIE (2009)
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Fellow, American Physical Society (2008)
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Fellow, Optical Society of America (2007)
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Award for Initiatives in Research, NAS (2007)
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David and Lucile Packard Fellowship in Science and Engineering, David and Lucile Packard (2013)
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David and Lucile Packard Foundation Career Award, David and Lucile Packard (2013)
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Adolph Lomb Medal, National Science Foundation (2013)
Boards, Advisory Committees, Professional Organizations
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member, Optical Society of America (2013 - Present)
Professional Education
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PhD, MIT, Physics (1997)
2018-19 Courses
- Guided Waves
EE 236B (Win) - Nanophotonics
EE 336, MATSCI 346 (Aut) -
Independent Studies (10)
- Directed Studies in Applied Physics
APPPHYS 290 (Aut, Win, Spr, Sum) - Master's Thesis and Thesis Research
EE 300 (Aut, Win, Spr, Sum) - Practical Training
APPPHYS 291 (Sum) - Practical Training
PHYSICS 291 (Sum) - Research
PHYSICS 490 (Win, Spr) - Special Studies and Reports in Electrical Engineering
EE 191 (Aut, Win, Spr) - Special Studies and Reports in Electrical Engineering
EE 391 (Aut, Win, Spr, Sum) - Special Studies and Reports in Electrical Engineering (WIM)
EE 191W (Aut, Win, Spr) - Special Studies or Projects in Electrical Engineering
EE 190 (Aut, Win, Spr) - Special Studies or Projects in Electrical Engineering
EE 390 (Aut, Win, Spr, Sum)
- Directed Studies in Applied Physics
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Prior Year Courses
2017-18 Courses
- Guided Waves
EE 236B (Win) - Nanophotonics
EE 336, MATSCI 346 (Aut)
2016-17 Courses
- Guided Waves
EE 236B (Win) - Nanophotonics
EE 336, MATSCI 346 (Aut)
2015-16 Courses
- Basic Physics for Solid State Electronics
EE 228 (Spr) - Guided Waves
EE 236B (Win)
- Guided Waves
Stanford Advisees
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Doctoral Dissertation Reader (AC)
Lars Neustock, Mohammad Zaman, Jingyuan Linda Zhang -
Postdoctoral Faculty Sponsor
Viktar Asadchy, Avik Dutt, Wei Li, Momchil Minkov, Georgia Theano Papadakis, Yu Song, Ian Williamson, Bo Zhao -
Master's Program Advisor
John Bryan -
Doctoral (Program)
Geun Ho Ahn, Lingling Fan, Jinhie Skarda
All Publications
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Input-output formalism for few-photon transport: A systematic treatment beyond two photons
PHYSICAL REVIEW A
2015; 91 (4)
View details for DOI 10.1103/PhysRevA.91.043845
View details for Web of Science ID 000353680100025
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Heat-flux control and solid-state cooling by regulating chemical potential of photons in near-field electromagnetic heat transfer
PHYSICAL REVIEW B
2015; 91 (13)
View details for DOI 10.1103/PhysRevB.91.134301
View details for Web of Science ID 000352683900003
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Optical separation of heterogeneous size distributions of microparticles on silicon nitride strip waveguides
OPTICS EXPRESS
2015; 23 (7): 8855-8866
Abstract
We demonstrate two complementary optical separation techniques of dielectric particles on the surface of silicon nitride waveguides. Glass particles ranging from 2 μm to 10 μm in diameter are separated at guided powers below 40 mW. The effects of optical, viscous, and frictional forces on the particles are modeled and experimentally shown to enable separation. Particle interactions are investigated and shown to decrease measured particle velocity without interfering with the overall particle separation distribution. The demonstrated separation techniques have the potential to be integrated with microfluidic structures for cell sorting.
View details for DOI 10.1364/OE.23.008855
View details for Web of Science ID 000352290000088
View details for PubMedID 25968723
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Near-complete violation of detailed balance in thermal radiation
PHYSICAL REVIEW B
2014; 90 (22)
View details for DOI 10.1103/PhysRevB.90.220301
View details for Web of Science ID 000346388500002
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Accelerating simulation of ensembles of locally differing optical structures via a Schur complement domain decomposition
OPTICS LETTERS
2014; 39 (22): 6458-6461
View details for DOI 10.1364/OL.39.006458
View details for Web of Science ID 000344986000026
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Consideration of enhancement of thermal rectification using metamaterial models
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
2014; 148: 156-164
View details for DOI 10.1016/j.jqsrt.2014.07.007
View details for Web of Science ID 000342254100018
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Light Guiding by Effective Gauge Field for Photons
PHYSICAL REVIEW X
2014; 4 (3)
View details for DOI 10.1103/PhysRevX.4.031031
View details for Web of Science ID 000341248700001
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Total absorption by degenerate critical coupling
APPLIED PHYSICS LETTERS
2014; 104 (25)
View details for DOI 10.1063/1.4885517
View details for Web of Science ID 000338515900010
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Optical Fano resonance of an individual semiconductor nanostructure
NATURE MATERIALS
2014; 13 (5): 471-475
Abstract
Fano resonances with a characteristic asymmetric line shape can be observed in light scattering, transmission and reflection spectra of resonant optical systems. They result from interference between direct and indirect, resonance-assisted pathways. In the nanophotonics field, Fano effects have been observed in a wide variety of systems, including metallic nanoparticle assemblies, metamaterials and photonic crystals. Their unique properties find extensive use in applications, including optical filtering, polarization selectors, sensing, lasers, modulators and nonlinear optics. We report on the observation of a Fano resonance in a single semiconductor nanostructure, opening up opportunities for their use in active photonic devices. We also show that Fano-resonant semiconductor nanostructures afford the intriguing opportunity to simultaneously measure the far-field scattering response and the near-field energy storage by extracting photogenerated charge. Together they can provide a complete experimental characterization of this type of resonance.
View details for DOI 10.1038/NMAT3927
View details for Web of Science ID 000334845600017
View details for PubMedID 24747781
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Total Absorption in a Graphene Mono layer in the Optical Regime by Critical Coupling with a Photonic Crystal Guided Resonance
ACS PHOTONICS
2014; 1 (4): 347-353
View details for DOI 10.1021/ph400090p
View details for Web of Science ID 000335805200008
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Fluctuational electrodynamics calculations of near-field heat transfer in non-planar geometries: A brief overview
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
2014; 132: 3-11
View details for DOI 10.1016/j.jqsrt.2013.04.017
View details for Web of Science ID 000328174000002
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Light Trapping in Photonic Crystals
Conference on Thin Films for Solar and Energy Technology VI
SPIE-INT SOC OPTICAL ENGINEERING. 2014
View details for DOI 10.1117/12.2061160
View details for Web of Science ID 000349362600014
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Ultrahigh contrast and large-bandwidth thermal rectification in near-field electromagnetic thermal transfer between nanoparticles
Conference on Nanophotonic Materials XI
SPIE-INT SOC OPTICAL ENGINEERING. 2014
View details for DOI 10.1117/12.2061262
View details for Web of Science ID 000344107800012
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Efficiency above the Shockley-Queisser Limit by Using Nanophotonic Effects To Create Multiple Effective Bandgaps With a Single Semiconductor
NANO LETTERS
2014; 14 (1): 66-70
Abstract
We present a pure photonic approach to overcome the Shockley-Queisser limit. A single material can show different effective bandgap, set by its absorption spectrum, which depends on its photonic structure. In a tandem cell configuration constructed from a single material, one can achieve two different effective bandgaps, thereby exceeding the Shockley-Queisser limit.
View details for DOI 10.1021/nl403653j
View details for Web of Science ID 000329586700011
View details for PubMedID 24279726
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Coupled double-layer Fano resonance photonic crystal filters with lattice-displacement
APPLIED PHYSICS LETTERS
2013; 103 (24)
View details for DOI 10.1063/1.4846475
View details for Web of Science ID 000328706500006
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Deep subwavelength plasmonic waveguide switch in double graphene layer structure
APPLIED PHYSICS LETTERS
2013; 103 (23)
View details for DOI 10.1063/1.4839420
View details for Web of Science ID 000328634900075
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Analytic properties of two-photon scattering matrix in integrated quantum systems determined by the cluster decomposition principle.
Physical review letters
2013; 111 (22): 223602-?
Abstract
We consider a general class of integrated quantum systems where photon-photon interaction occurs in a quantum device that is localized in space. Using techniques that are closely related to cluster decomposition principles in quantum field theory, we provide a general constraint on the analytic properties of a two-photon S matrix in this class of systems. We also show that the photon-photon interaction in these systems inevitably leads to frequency mixing and entanglement and that frequencies of the single photons cannot be preserved in these systems.
View details for PubMedID 24329447
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Analytic Properties of Two-Photon Scattering Matrix in Integrated Quantum Systems Determined by the Cluster Decomposition Principle
PHYSICAL REVIEW LETTERS
2013; 111 (22)
View details for DOI 10.1103/PhysRevLett.111.223602
View details for Web of Science ID 000327941100011
View details for PubMedID 24329447
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Color-preserving daytime radiative cooling
APPLIED PHYSICS LETTERS
2013; 103 (22)
View details for DOI 10.1063/1.4835995
View details for Web of Science ID 000327696300079
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Controlling the Flow of Light Using the Inhomogeneous Effective Gauge Field that Emerges from Dynamic Modulation
PHYSICAL REVIEW LETTERS
2013; 111 (20)
Abstract
We show that the effective gauge field for photons provides a versatile platform for controlling the flow of light. As an example we consider a photonic resonator lattice where the coupling strength between nearest neighbor resonators are harmonically modulated. By choosing different spatial distributions of the modulation phases, and hence imposing different inhomogeneous effective magnetic field configurations, we numerically demonstrate a wide variety of propagation effects including negative refraction, one-way mirror, and on- and off-axis focusing. Since the effective gauge field is imposed dynamically after a structure is constructed, our work points to the importance of the temporal degree of freedom for controlling the spatial flow of light.
View details for DOI 10.1103/PhysRevLett.111.203901
View details for Web of Science ID 000327243300002
View details for PubMedID 24289686
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Ultrahigh-contrast and large-bandwidth thermal rectification in near-field electromagnetic thermal transfer between nanoparticles
PHYSICAL REVIEW B
2013; 88 (18)
View details for DOI 10.1103/PhysRevB.88.184301
View details for Web of Science ID 000326507400002
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Effective magnetic field for photons based on the magneto-optical effect
PHYSICAL REVIEW A
2013; 88 (4)
View details for DOI 10.1103/PhysRevA.88.043847
View details for Web of Science ID 000326389100015
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A lateral optical equilibrium in waveguide-resonator optical force
OPTICS EXPRESS
2013; 21 (21): 25257-25270
Abstract
We consider the lateral optical force between a resonator and a waveguide, and study the possibility of an equilibrium that occurs solely from the optical force in such system. We prove analytically that a single-resonance system cannot give such an equilibrium in the resonator-waveguide force. We then show that two-resonance systems can provide such an equilibrium. We provide an intuitive way to predict the existence of an equilibrium, and give numerical examples.
View details for DOI 10.1364/OE.21.025257
View details for Web of Science ID 000326085600080
View details for PubMedID 24150366
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Double-layer Fano resonance photonic crystal filters
OPTICS EXPRESS
2013; 21 (21): 24582-24589
Abstract
We report ultra-compact surface-normal high-Q optical filters based on single- and double-layer stacked Fano resonance photonic crystal slabs on both Si and quartz substrates. A single layer photonic crystal filter was designed and a Q factor of 1,737 was obtained with 23 dB extinction ratio. With stacked double-layer photonic crystal configuration, the optical filter Q can increase to over 10,000,000 in design. Double-layer filters with quality factor of 9,734 and extinction ratio of 8 dB were experimentally demonstrated, for a filter design with target Q of 22,000.
View details for DOI 10.1364/OE.21.024582
View details for Web of Science ID 000326085600016
View details for PubMedID 24150302
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Dissipation in few-photon waveguide transport [Invited]
PHOTONICS RESEARCH
2013; 1 (3): 110-114
View details for DOI 10.1364/PRJ.1.000110
View details for Web of Science ID 000209372500002
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Accelerated solution of the frequency-domain Maxwell's equations by engineering the eigenvalue distribution of the operator
OPTICS EXPRESS
2013; 21 (19): 22578-22595
Abstract
We introduce a simple method to accelerate the convergence of iterative solvers of the frequency-domain Maxwell's equations for deep-subwavelength structures. Using the continuity equation, the method eliminates the high multiplicity of near-zero eigenvalues of the operator while leaving the operator nearly positive-definite. The impact of the modified eigenvalue distribution on the accelerated convergence is explained by visualizing residual vectors and residual polynomials.
View details for DOI 10.1364/OE.21.022578
View details for Web of Science ID 000325547200082
View details for PubMedID 24104147
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Optical pulling force and conveyor belt effect in resonator-waveguide system
OPTICS LETTERS
2013; 38 (17): 3264-3267
Abstract
We present the theoretical condition and actual numerical design that achieves an optical pulling force in resonator-waveguide systems, where the direction of the force on the resonator is in the opposite direction to the input light in the waveguide. We also show that this pulling force can occur in conjunction with the lateral optical equilibrium effect, such that the resonator is maintained at the fixed distance from the waveguide while experiencing the pulling force.
View details for DOI 10.1364/OL.38.003264
View details for Web of Science ID 000323758000019
View details for PubMedID 23988930
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Photonic de Haas-van Alphen effect
OPTICS EXPRESS
2013; 21 (15): 18216-18224
Abstract
Based on the recently proposed concept of effective gauge potential and magnetic field for photons, we numerically demonstrate a photonic de Haas-van Alphen effect. We show that in a dynamically modulated photonic resonator lattice exhibiting an effect magnetic field, the trajectories of the light beam at a given frequency have the same shape as the constant energy contour for the photonic band structure of the lattice in the absence of the effective magnetic field.
View details for DOI 10.1364/OE.21.018216
View details for Web of Science ID 000322366300081
View details for PubMedID 23938692
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Modeling Coherent Backscattering Errors in Fiber Optic Gyroscopes for Sources of Arbitrary Line Width
JOURNAL OF LIGHTWAVE TECHNOLOGY
2013; 31 (13): 2070-2078
View details for DOI 10.1109/JLT.2013.2261283
View details for Web of Science ID 000319682100002
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Experimental Observation of Low Noise and Low Drift in a Laser-Driven Fiber Optic Gyroscope
JOURNAL OF LIGHTWAVE TECHNOLOGY
2013; 31 (13): 2079-2085
View details for DOI 10.1109/JLT.2013.2261285
View details for Web of Science ID 000319682100003
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Slow-Light Fiber-Bragg-Grating Strain Sensor With a 280-femtostrain/root Hz Resolution
JOURNAL OF LIGHTWAVE TECHNOLOGY
2013; 31 (11): 1804-1808
View details for DOI 10.1109/JLT.2013.2258658
View details for Web of Science ID 000318702800002
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Wireless power transfer in the presence of metallic plates: Experimental results
AIP ADVANCES
2013; 3 (6)
View details for DOI 10.1063/1.4809665
View details for Web of Science ID 000321144300002
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Near-infrared surface plasmon polariton dispersion control with hyperbolic metamaterials
OPTICS EXPRESS
2013; 21 (9): 11107-11114
Abstract
We demonstrate experimentally signatures and dispersion control of surface plasmon polaritons from 1 to 1.8 µm using periodic multilayer metallo-dielectric hyperbolic metamaterials. The fabricated structures are comprised of smooth films with very low metal filling factor. The measured dispersion properties of these hyperbolic metamaterials agree well with calculations using transfer matrix, finite-difference time-domain, and effective medium approximation methods despite using only 2.5 periods. The enhancement factor in the local photonic density of states from the studied samples in the near-infrared wavelength region is determined to be 2.5-3.5. Development of this type of metamaterial is relevant to sub-wavelength imaging, spontaneous emission and thermophotovoltaic applications.
View details for DOI 10.1364/OE.21.011107
View details for Web of Science ID 000318906500099
View details for PubMedID 23669967
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Upper bound on the modal material loss rate in plasmonic and metamaterial systems.
Physical review letters
2013; 110 (18): 183901-?
Abstract
A better understanding of optical loss in plasmonic and metamaterial systems is of increasing importance for both basic and applied research in a broad range of topics including sensors, antennas, optical interconnects, and photovoltaics. In this Letter, we use a photonic band formalism for plasmonics to exactly derive a fundamental upper bound on the nonradiative material loss rate of modes in plasmonic, polaritonic, and metamaterial systems. This bound is purely defined by material properties and cannot be overcome by device design. Moreover it is frequency dependent in the presence of multiple Lorentz poles. We numerically verify this bound through direct calculations for a range of plasmonic systems, including optical antennas where the bound places fundamental performance constraints.
View details for PubMedID 23683195
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Resonant cavity enhanced light harvesting in flexible thin-film organic solar cells
OPTICS LETTERS
2013; 38 (9): 1431-1433
Abstract
Dielectric/metal/dielectric (DMD) electrodes have the potential to significantly increase the absorption efficiency and photocurrent in flexible organic solar cells. We demonstrate that this enhancement is attributed to a broadband cavity resonance. Silver-based semitransparent DMD electrodes with sheet resistances below 10 ohm/sq. are fabricated on flexible polyethylene terephthalate (PET) substrates in a high-throughput roll-to-roll sputtering tool. We carefully study the effect of the semitransparent DMD electrode (here composed of Zn(x)Sn(y)O(z)/Ag/In(x)Sn(y)O(z)) on the optical device performance of a copper phthalocyanine (CuPc)/fullerene (C60) bilayer cell and illustrate that a resonant cavity enhanced light trapping effect dominates the optical behavior of the device.
View details for DOI 10.1364/OL.38.001431
View details for Web of Science ID 000318425600024
View details for PubMedID 23632508
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Compact bends for multi-mode photonic crystal waveguides with high transmission and suppressed modal crosstalk
OPTICS EXPRESS
2013; 21 (7): 8069-8075
Abstract
We demonstrate an extremely compact bend for a photonic crystal waveguide supporting three spatial modes. The bend exhibits nearly 100% transmission over a relative bandwidth of 1% with less than 1% crosstalk. We show that our design is robust with respect to fabrication errors. Our design method is applied to create a structure consisting of dielectric rods, as well as a structure consisting of air holes in a dielectric background.
View details for Web of Science ID 000317659300023
View details for PubMedID 23571897
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Ultrabroadband Photonic Structures To Achieve High-Performance Daytime Radiative Cooling
NANO LETTERS
2013; 13 (4): 1457-1461
Abstract
If properly designed, terrestrial structures can passively cool themselves through radiative emission of heat to outer space. For the first time, we present a metal-dielectric photonic structure capable of radiative cooling in daytime outdoor conditions. The structure behaves as a broadband mirror for solar light, while simultaneously emitting strongly in the mid-IR within the atmospheric transparency window, achieving a net cooling power in excess of 100 W/m(2) at ambient temperature. This cooling persists in the presence of significant convective/conductive heat exchange and nonideal atmospheric conditions.
View details for DOI 10.1021/nl4004283
View details for Web of Science ID 000317549300016
View details for PubMedID 23461597
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Experimental Assessment of the Accuracy of an Advanced Photonic-Bandgap-Fiber Model
JOURNAL OF LIGHTWAVE TECHNOLOGY
2013; 31 (7): 1015-1022
View details for DOI 10.1109/JLT.2013.2238608
View details for Web of Science ID 000314694100001
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Fluorescence Correlation Spectroscopy at High Concentrations using Gold Bowtie Nanoantennas (vol 406C, pg 3, 2012)
CHEMICAL PHYSICS
2013; 415: 309-309
View details for DOI 10.1016/j.chemphys.2013.02.003
View details for Web of Science ID 000317277300042
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Temporal coupled mode theory for thermal emission from a single thermal emitter supporting either a single mode or an orthogonal set of modes
APPLIED PHYSICS LETTERS
2013; 102 (10)
View details for DOI 10.1063/1.4794981
View details for Web of Science ID 000316501200067
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Experimental demonstration of a photonic Aharonov-Bohm effect at radio frequencies
PHYSICAL REVIEW B
2013; 87 (6)
View details for DOI 10.1103/PhysRevB.87.060301
View details for Web of Science ID 000314992700001
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Highly Tailored Computational Electromagnetics Methods for Nanophotonic Design and Discovery
PROCEEDINGS OF THE IEEE
2013; 101 (2): 484-493
View details for DOI 10.1109/JPROC.2012.2207649
View details for Web of Science ID 000313724400021
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Transparent and conductive paper from nanocellulose fibers
ENERGY & ENVIRONMENTAL SCIENCE
2013; 6 (2): 513-518
View details for DOI 10.1039/c2ee23635d
View details for Web of Science ID 000313892400013
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Tight-binding calculation of radiation loss in photonic crystal CROW
OPTICS EXPRESS
2013; 21 (2): 2463-2473
Abstract
The tight binding approximation (TBA) is used to relate the intrinsic, radiation loss of a coupled resonator optical waveguide (CROW) to that of a single constituent resonator within a light cone picture. We verify the validity of the TBA via direct, full-field simulation of CROWs based on the L2 photonic crystal cavity. The TBA predicts that the quality factor of the CROW increases with that of the isolated cavity. Moreover, our results provide a method to design CROWs with low intrinsic loss across the entire waveguide band.
View details for Web of Science ID 000315989500110
View details for PubMedID 23389227
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Fundamental bounds on decay rates in asymmetric single-mode optical resonators
OPTICS LETTERS
2013; 38 (2): 100-102
Abstract
We derive tight upper and lower bounds of the ratio between decay rates to two ports from a single resonance exhibiting Fano interference, based on a general temporal coupled-mode theory formalism. The photon transport between these two ports involves both direct and resonance-assisted contributions, and the bounds depend only on the direct process. The bounds imply that, in a lossless system, full reflection is always achievable at Fano resonance, even for structures lacking mirror symmetries, while full transmission can only be seen in a symmetric configuration where the two decay rates are equal. The analytic predictions are verified against full-field electromagnetic simulations.
View details for Web of Science ID 000313636600007
View details for PubMedID 23454928
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Detailed balance analysis of nanophotonic solar cells
OPTICS EXPRESS
2013; 21 (1): 1209-1217
Abstract
We present a detailed balance based approach for performing current density-voltage characteristic modeling of nanophotonic solar cells. This approach takes into account the intrinsic material non-idealities, and is useful for determining the theoretical limit of solar cell efficiency for a given structure. Our approach only requires the cell's absorption spectra over all angles, which can be readily calculated using available simulation tools. Using this approach, we elucidate the physics of open-circuit voltage enhancement over bulk cells in nanoscale thin film structures, by showing that the enhancement is related to the absorption suppression in the immediate spectral region above the bandgap. We also show that with proper design, the use of a grating on a nanoscale thin film can increase its short-circuit current, while preserving its voltage-enhancing capabilities.
View details for Web of Science ID 000315988100144
View details for PubMedID 23389013
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Routing of Deep-Subwavelength Optical Beams and Images without Reflection and Diffraction Using Infinitely Anisotropic Metamaterials
ADVANCED MATERIALS
2013; 25 (2): 194-198
Abstract
Interfaces between media with infinite anisotropy, defined by infinite permittivity or permeability in one direction, offer new opportunities for controlling and manipulating light at the nanoscale. Reflectionless, diffraction-free routing of deep-subwavelength optical beams and images using interfaces between infinitely anisotropic media are demonstrated. It is shown how to achieve extremely large anisotropy using metamaterial designs that can be implemented with existing materials.
View details for DOI 10.1002/adma.201203528
View details for Web of Science ID 000313262300005
View details for PubMedID 23180728
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Synthetic magnetic field directs photons
PHOTONICS SPECTRA
2013; 47 (1): 28-?
View details for Web of Science ID 000314482400008
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Photonic structures: advanced thermal control, and effective gauge field for light
7th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)
IEEE. 2013: 232–233
View details for Web of Science ID 000352010200078
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Manipulating Thermal Electromagnetic Fields by Engineering Nanophotonic Resonances
10th Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR)
IEEE. 2013
View details for Web of Science ID 000334176100172
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Local density of states of chiral Hall edge states in gyrotropic photonic clusters
Physical Review B
2013; 88 (3)
View details for DOI 10.1103/PhysRevB.88.035127
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Color-preserving daytime radiative cooling
Applied Physics Letters
2013; 103 (22)
View details for DOI 10.1063/1.4835995
-
Effective magnetic field for photons based on the magneto-optical effect
Physical Review A
2013; 88 (4)
View details for DOI 10.1103/PhysRevA.88.043847
-
Deep subwavelength plasmonic waveguide switch in double graphene layer structure
Applied Physics Letters
2013; 103 (23)
View details for DOI 10.1063/1.4839420
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What is - and what is not - an optical isolator
Nature Photonics
2013; 7 (8): 579-582
View details for DOI 10.1038/nphoton.2013.185
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Upper Bound on the Modal Material Loss Rate in Plasmonic and Metamaterial Systems
Physical Review Letters
2013; 110 (18)
View details for DOI 10.1103/PhysRevLett.110.183901
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Two-photon transport through a waveguide coupling to a whispering-gallery resonator containing an atom and photon-blockade effect
Physical Review A
2013; 87 (6)
View details for DOI 10.1103/PhysRevA.87.063818
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Two-Dimensional Chalcogenide Nanoplates as Tunable Metamaterials via Chemical Intercalation
Nano Letters
2013; 13 (12): 5913-5918
View details for DOI 10.1021/nl402937g
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Metamaterial band theory: fundamentals & applications
Science China-Information Sciences
2013; 56 (12)
View details for DOI 10.1007/s11432-013-5039-7
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Experimental demonstration of a photonic Aharonov-Bohm effect at radio frequencies
Physical Review B
2013; 87 (6)
View details for DOI 10.1103/PhysRevB.87.060301
-
Coupled double-layer Fano resonance photonic crystal filters with lattice-displacement
Applied Physics Letters
2013; 103 (24)
View details for DOI 10.1063/1.4846475
-
Analytic Properties of Two-Photon Scattering Matrix in Integrated Quantum Systems Determined by the Cluster Decomposition Principle
Physical Review Letters
2013; 111 (22)
View details for DOI 10.1103/PhysRevLett.111.223602
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A transparent electrode based on a metal nanotrough network
Nature Nanotechnology
2013; 8 (6): 421-425
View details for DOI 10.1038/nnano.2013.84
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Enhancing far-field thermal emission with thermal extraction
Nature Communications
2013; 4
View details for DOI 10.1038/ncomms2765
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Broadband Sharp 90-degree Bends and T-Splitters in Plasmonic Coaxial Waveguides
Nano Letters
2013; 13 (10): 4753-4758
View details for DOI 10.1021/nl402335x
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Ultrahigh-contrast and large-bandwidth thermal rectification in near-field electromagnetic thermal transfer between nanoparticles
Physical Review B
2013; 88 (18)
View details for DOI 10.1103/PhysRevB.88.184300
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Three-dimensional self-assembled photonic crystals with high temperature stability for thermal emission modification
Nature Communications
2013; 4
View details for DOI 10.1038/ncomms3630
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Fluorescence Correlation Spectroscopy at High Concentrations using Gold Bowtie Nanoantennas (vol 406C, pg 3, 2012)
Chemical Physics
2013; 415: 309
View details for DOI 10.1016/j.chemphys.2013.02.003
-
Controlling the Flow of Light Using the Inhomogeneous Effective Gauge Field that Emerges from Dynamic Modulation
Physical Review Letters
2013; 111 (20)
View details for DOI 10.1103/PhysRevLett.111.203901
-
Wireless power transfer in the presence of metallic plates: Experimental results
Aip Advances
2013; 3 (6)
View details for DOI 10.1063/1.4809665
-
Temporal coupled mode theory for thermal emission from a single thermal emitter supporting either a single mode or an orthogonal set of modes
Applied Physics Letters
2013; 102 (10)
View details for DOI 10.1063/1.4794981
-
Optimization of non-periodic plasmonic light-trapping layers for thin-film solar cells
Nature Communications
2013; 4
View details for DOI 10.1038/ncomms3095
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Modal Source Radiator Model for Arbitrary Two-Dimensional Arrays of Subwavelength Apertures on Metal Films
Ieee Journal of Selected Topics in Quantum Electronics
2013; 19 (3)
View details for DOI 10.1109/jstqe.2012.2229383
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Enhancing far-field thermal emission with thermal extraction.
Nature communications
2013; 4: 1730-?
Abstract
The control of thermal radiation is of great current importance for applications such as energy conversions and radiative cooling. Here we show theoretically that the thermal emission of a finite-size blackbody emitter can be enhanced in a thermal extraction scheme, where one places the emitter in optical contact with an extraction device consisting of a transparent object, as long as both the emitter and the extraction device have an internal density of state higher than vacuum, and the extraction device has an area larger than the emitter and moreover has a geometry that enables light extraction. As an experimental demonstration of the thermal extraction scheme, we observe a four-fold enhancement of the far-field thermal emission of a carbon-black emitter having an emissivity of 0.85.
View details for DOI 10.1038/ncomms2765
View details for PubMedID 23591897
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Enhancing the waveguide-resonator optical force with an all-optical on-chip analog of electromagnetically induced transparency
PHYSICAL REVIEW A
2012; 86 (6)
View details for DOI 10.1103/PhysRevA.86.063833
View details for Web of Science ID 000312829800038
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Ultra-compact photonic crystal waveguide spatial mode converter and its connection to the optical diode effect
OPTICS EXPRESS
2012; 20 (27): 28388-28397
Abstract
We design an extremely compact photonic crystal waveguide spatial mode converter which converts the fundamental even mode to the higher order odd mode with nearly 100% efficiency. We adapt a previously developed design and optimization process that allows these types of devices to be designed in a matter of minutes. We also present an extremely compact optical diode device and clarify its general properties and its relation to spatial mode converters. Finally, we connect the results here to a general theory on the complexity of optical designs.
View details for Web of Science ID 000314911400044
View details for PubMedID 23263074
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A simple Bayesian decision-theoretic design for dose-finding trials
STATISTICS IN MEDICINE
2012; 31 (28): 3719-3730
Abstract
A flexible and simple Bayesian decision-theoretic design for dose-finding trials is proposed in this paper. In order to reduce the computational burden, we adopt a working model with conjugate priors, which is flexible to fit all monotonic dose-toxicity curves and produces analytic posterior distributions. We also discuss how to use a proper utility function to reflect the interest of the trial. Patients are allocated based on not only the utility function but also the chosen dose selection rule. The most popular dose selection rule is the one-step-look-ahead (OSLA), which selects the best-so-far dose. A more complicated rule, such as the two-step-look-ahead, is theoretically more efficient than the OSLA only when the required distributional assumptions are met, which is, however, often not the case in practice. We carried out extensive simulation studies to evaluate these two dose selection rules and found that OSLA was often more efficient than two-step-look-ahead under the proposed Bayesian structure. Moreover, our simulation results show that the proposed Bayesian method's performance is superior to several popular Bayesian methods and that the negative impact of prior misspecification can be managed in the design stage.
View details for DOI 10.1002/sim.5438
View details for Web of Science ID 000311402300021
View details for PubMedID 22763943
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Few-Photon Single-Atom Cavity QED With Input-Output Formalism in Fock Space
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
2012; 18 (6): 1754-1762
View details for DOI 10.1109/JSTQE.2012.2196261
View details for Web of Science ID 000308664900016
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Realizing effective magnetic field for photons by controlling the phase of dynamic modulation
NATURE PHOTONICS
2012; 6 (11): 782-787
View details for DOI 10.1038/NPHOTON.2012.236
View details for Web of Science ID 000310848300020
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On the Time to Conclusion of Phase II Cancer Clinical Trials and Its Application in Trial Designs
STATISTICS IN BIOPHARMACEUTICAL RESEARCH
2012; 4 (4): 324-335
View details for DOI 10.1080/19466315.2012.695258
View details for Web of Science ID 000309751000002
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Thermodynamic Upper Bound on Broadband Light Coupling with Photonic Structures
PHYSICAL REVIEW LETTERS
2012; 109 (17)
Abstract
The coupling between free space radiation and optical media critically influences the performance of optical devices. We show that, for any given photonic structure, the sum of the external coupling rates for all its optical modes are subject to an upper bound dictated by the second law of thermodynamics. Such bound limits how efficient light can be coupled to any photonic structure. As one example of application, we use this upper bound to derive the limit of light absorption in broadband solar absorbers.
View details for DOI 10.1103/PhysRevLett.109.173901
View details for Web of Science ID 000310200100011
View details for PubMedID 23215189
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Fluorescence correlation spectroscopy at high concentrations using gold bowtie nanoantennas
CHEMICAL PHYSICS
2012; 406: 3-8
View details for DOI 10.1016/j.chemphys.2012.04.011
View details for Web of Science ID 000310569800002
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Optical Absorption Enhancement in Freestanding GaAs Thin Film Nanopyramid Arrays
ADVANCED ENERGY MATERIALS
2012; 2 (10): 1254-1260
View details for DOI 10.1002/aenm.201200022
View details for Web of Science ID 000309595900014
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S-4: A free electromagnetic solver for layered periodic structures
COMPUTER PHYSICS COMMUNICATIONS
2012; 183 (10): 2233-2244
View details for DOI 10.1016/j.cpc.2012.04.026
View details for Web of Science ID 000306771900020
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Design for broadband on-chip isolator using stimulated Brillouin scattering in dispersion-engineered chalcogenide waveguides
OPTICS EXPRESS
2012; 20 (19): 21235-21246
Abstract
We propose a scheme for on-chip isolation in chalcogenide (As₂S₃) rib waveguides, in which Stimulated Brillouin Scattering is used to induce non-reciprocal mode conversion within a multi-moded waveguide. The design exploits the idea that a chalcogenide rib buried in a silica matrix acts as waveguide for both light and sound, and can also be designed to be multi-moded for both optical and acoustic waves. The enhanced opto-acoustic coupling allows significant isolation (> 20 dB) within a chip-scale (cm-long) device (< 10 cm). We also show that the bandwidth of this device can be dramatically increased by tuning the dispersion of the waveguide to match the group velocity between optical modes: we find that 20 dB isolation can be extended over a bandwidth of 25 nm.
View details for Web of Science ID 000308865600066
View details for PubMedID 23037247
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Near-Field Radiative Cooling of Nanostructures
NANO LETTERS
2012; 12 (9): 4546-4550
Abstract
We measure near-field radiative cooling of a thermally isolated nanostructure up to a few degrees and show that in principle this process can efficiently cool down localized hotspots by tens of degrees at submicrometer gaps. This process of cooling is achieved without any physical contact, in contrast to heat transfer through conduction, thus enabling novel cooling capabilities. We show that the measured trend of radiative cooling agrees well theoretical predictions and is limited mainly by the geometry of the probe used here as well as the minimum separation that could be achieved in our setup. These results also pave the way for realizing other new effects based on resonant heat transfer, like thermal rectification and negative thermal conductance.
View details for DOI 10.1021/nl301708e
View details for Web of Science ID 000308576000021
View details for PubMedID 22891815
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Photonic chip based tunable and reconfigurable narrowband microwave photonic filter using stimulated Brillouin scattering
OPTICS EXPRESS
2012; 20 (17): 18836-18845
Abstract
We report the first demonstration of a photonic chip based dynamically reconfigurable, widely tunable, narrow pass-band, high Q microwave photonic filter (MPF). We exploit stimulated Brillouin scattering (SBS) in a 6.5 cm long chalcogenide (As2S3) photonic chip to demonstrate a MPF that exhibited a high quality factor of ~520 and narrow bandwidth and was dynamically reconfigurable and widely tunable. It maintained a stable 3 dB bandwidth of 23 ± 2MHz and amplitude of 20 ± 2 dB over a large frequency tuning range of 2-12 GHz. By tailoring the pump spectrum, we reconfigured the 3 dB bandwidth of the MPF from ~20 MHz to ~40 MHz and tuned the shape factor from 3.5 to 2 resulting in a nearly flat-topped filter profile. This demonstration represents a significant advance in integrated microwave photonics with potential applications in on-chip microwave signal processing for RADAR and analogue communications.
View details for Web of Science ID 000307873600033
View details for PubMedID 23038523
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Electrically Driven Nonreciprocity Induced by Interband Photonic Transition on a Silicon Chip
PHYSICAL REVIEW LETTERS
2012; 109 (3)
Abstract
We demonstrate electrically driven nonreciprocity on a silicon chip. By achieving an indirect interband photonic transition, we show that the transmission coefficients between two single-mode waveguides become dependent on the propagation directions only in the presence of the electrical drive. Our structure is characterized by a nonsymmetric scattering matrix identical to a linear magneto-optical device.
View details for DOI 10.1103/PhysRevLett.109.033901
View details for Web of Science ID 000306417600002
View details for PubMedID 22861851
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Rectification of evanescent heat transfer between dielectric-coated and uncoated silicon carbide plates
JOURNAL OF APPLIED PHYSICS
2012; 112 (2)
View details for DOI 10.1063/1.4737465
View details for Web of Science ID 000308424500087
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Hybrid Silicon Nanocone-Polymer Solar Cells
NANO LETTERS
2012; 12 (6): 2971-2976
Abstract
Recently, hybrid Si/organic solar cells have been studied for low-cost Si photovoltaic devices because the Schottky junction between the Si and organic material can be formed by solution processes at a low temperature. In this study, we demonstrate a hybrid solar cell composed of Si nanocones and conductive polymer. The optimal nanocone structure with an aspect ratio (height/diameter of a nanocone) less than two allowed for conformal polymer surface coverage via spin-coating while also providing both excellent antireflection and light trapping properties. The uniform heterojunction over the nanocones with enhanced light absorption resulted in a power conversion efficiency above 11%. Based on our simulation study, the optimal nanocone structures for a 10 μm thick Si solar cell can achieve a short-circuit current density, up to 39.1 mA/cm(2), which is very close to the theoretical limit. With very thin material and inexpensive processing, hybrid Si nanocone/polymer solar cells are promising as an economically viable alternative energy solution.
View details for DOI 10.1021/nl300713x
View details for Web of Science ID 000305106400054
View details for PubMedID 22545674
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High-Efficiency Amorphous Silicon Solar Cell on a Periodic Nanocone Back Reflector
ADVANCED ENERGY MATERIALS
2012; 2 (6): 628-633
View details for DOI 10.1002/aenm.201100514
View details for Web of Science ID 000305179000002
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Instantaneous electric energy and electric power dissipation in dispersive media
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
2012; 29 (5): 1048-1054
View details for Web of Science ID 000303544000024
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Choice of the perfectly matched layer boundary condition for frequency-domain Maxwell's equations solvers
JOURNAL OF COMPUTATIONAL PHYSICS
2012; 231 (8): 3406-3431
View details for DOI 10.1016/j.jcp.2012.01.013
View details for Web of Science ID 000301901600021
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Temporal coupled-mode theory for light scattering by an arbitrarily shaped object supporting a single resonance
PHYSICAL REVIEW A
2012; 85 (4)
View details for DOI 10.1103/PhysRevA.85.043828
View details for Web of Science ID 000302958000007
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Photonic Aharonov-Bohm Effect Based on Dynamic Modulation
PHYSICAL REVIEW LETTERS
2012; 108 (15)
Abstract
We show that when the refractive index of a photonic system is harmonically modulated, the phase of the modulation introduces an effective gauge potential for photons. This effective gauge potential can be used to create a photonic Aharonov-Bohm effect. We show that the photonic Aharonov-Bohm effect provides the optimal mechanism for achieving complete on-chip nonmagnetic optical isolation.
View details for DOI 10.1103/PhysRevLett.108.153901
View details for Web of Science ID 000302703600004
View details for PubMedID 22587255
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Stimulated Emission from a Single Excited Atom in a Waveguide
PHYSICAL REVIEW LETTERS
2012; 108 (14)
Abstract
We study stimulated emission from an excited two-level atom coupled to a waveguide containing an incident single-photon pulse. We show that the strong photon correlation, as induced by the atom, plays a very important role in stimulated emission. Additionally, the temporal duration of the incident photon pulse is shown to have a marked effect on stimulated emission and atomic lifetime.
View details for DOI 10.1103/PhysRevLett.108.143602
View details for Web of Science ID 000302293500010
View details for PubMedID 22540793
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Resonant Fiber Optic Gyroscope Using an Air-Core Fiber
JOURNAL OF LIGHTWAVE TECHNOLOGY
2012; 30 (7): 931-937
View details for DOI 10.1109/JLT.2011.2177959
View details for Web of Science ID 000300578100001
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Absorption Enhancement in Ultrathin Crystalline Silicon Solar Cells with Antireflection and Light-Trapping Nanocone Gratings
NANO LETTERS
2012; 12 (3): 1616-1619
Abstract
Enhancing the light absorption in ultrathin-film silicon solar cells is important for improving efficiency and reducing cost. We introduce a double-sided grating design, where the front and back surfaces of the cell are separately optimized for antireflection and light trapping, respectively. The optimized structure yields a photocurrent of 34.6 mA/cm(2) at an equivalent thickness of 2 μm, close to the Yablonovitch limit. This approach is applicable to various thicknesses and is robust against metallic loss in the back reflector.
View details for DOI 10.1021/nl204550q
View details for Web of Science ID 000301406800086
View details for PubMedID 22356436
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From Electromagnetically Induced Transparency to Superscattering with a Single Structure: A Coupled-Mode Theory for Doubly Resonant Structures
PHYSICAL REVIEW LETTERS
2012; 108 (8)
Abstract
We observe from simulations that a doubly resonant structure can exhibit spectral behavior analogous to electromagnetically induced transparency, as well as superscattering, depending on the excitation. We develop a coupled-mode theory that explains this behavior in terms of the orthogonality of the radiation patterns of the eigenmodes. These results provide insight in the general electromagnetic properties of photonic nanostructures and metamaterials.
View details for DOI 10.1103/PhysRevLett.108.083902
View details for Web of Science ID 000300576000010
View details for PubMedID 22463532
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Resonance fluorescence in a waveguide geometry
PHYSICAL REVIEW A
2012; 85 (2)
View details for DOI 10.1103/PhysRevA.85.023817
View details for Web of Science ID 000300417300003
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Lossless intensity modulation in integrated photonics
OPTICS EXPRESS
2012; 20 (4): 4280-4290
Abstract
We present a dynamical analysis of lossless intensity modulation in two different ring resonator geometries. In both geometries, we demonstrate modulation schemes that result in a symmetrical output with an infinite on/off ratio. The systems behave as lossless intensity modulators where the time-averaged output optical power is equal to the time-averaged input optical power.
View details for Web of Science ID 000301041900093
View details for PubMedID 22418187
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Broadband light management using low-Q whispering gallery modes in spherical nanoshells
NATURE COMMUNICATIONS
2012; 3
Abstract
Light trapping across a wide band of frequencies is important for applications such as solar cells and photodetectors. Here, we demonstrate a new approach to light management by forming whispering-gallery resonant modes inside a spherical nanoshell structure. The geometry of the structure gives rise to a low quality-factor, facilitating the coupling of light into the resonant modes and substantial enhancement of the light path in the active material, thus dramatically improving absorption. Using nanocrystalline silicon (nc-Si) as a model system, we observe broadband absorption enhancement across a large range of incident angles. The absorption of a single layer of 50-nm-thick spherical nanoshells is equivalent to a 1-μm-thick planar nc-Si film. This light-trapping structure could enable the manufacturing of high-throughput ultra-thin film absorbers in a variety of material systems that demand shorter deposition time, less material usage and transferability to flexible substrates.
View details for DOI 10.1038/ncomms1664
View details for Web of Science ID 000302060100005
View details for PubMedID 22314360
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Negative differential thermal conductance through vacuum
APPLIED PHYSICS LETTERS
2012; 100 (4)
View details for DOI 10.1063/1.3679694
View details for Web of Science ID 000300064500085
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Comment on "Nonreciprocal Light Propagation in a Silicon Photonic Circuit"
SCIENCE
2012; 335 (6064)
Abstract
We show that the structure demonstrated by Feng et al. (Reports, 5 August 2011, p. 729) cannot enable optical isolation because it possesses a symmetric scattering matrix. Moreover, one cannot construct an optical isolator by incorporating this structure into any system as long as the system is linear and time-independent and is described by materials with a scalar dielectric function.
View details for DOI 10.1126/science.1216682
View details for Web of Science ID 000298846200036
View details for PubMedID 22223793
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Temperature dependence of surface phonon polaritons from a quartz grating (vol 110, 043517, 2011)
JOURNAL OF APPLIED PHYSICS
2012; 111 (1)
View details for DOI 10.1063/1.3665444
View details for Web of Science ID 000299127200132
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From Electromagnetically Induced Transparency to Superscattering with a Single Structure: A Coupled-Mode Theory for Doubly Resonant Structures
Physical Review Letters
2012; 108 (8)
View details for DOI 083902 10.1103/PhysRevLett.108.083902
-
Temporal coupled-mode theory for light scattering by an arbitrarily shaped object supporting a single resonance
Physical Review A
2012; 85 (4)
View details for DOI 043828 10.1103/PhysRevA.85.043828
-
Resonance fluorescence in a waveguide geometry
Physical Review A
2012; 85 (2)
View details for DOI 023817 10.1103/PhysRevA.85.023817
-
Thermodynamic Upper Bound on Broadband Light Coupling with Photonic Structures
Physical Review Letters
2012; 109 (17)
View details for DOI 10.1103/PhysRevLett.109.173901
-
Temperature dependence of surface phonon polaritons from a quartz grating (vol 110, 043517, 2011)
Journal of Applied Physics
2012; 111 (1)
View details for DOI 019902 10.1063/1.3665444
-
Photonic Aharonov-Bohm Effect Based on Dynamic Modulation
Physical Review Letters
2012; 108 (15)
View details for DOI 153901 10.1103/PhysRevLett.108.153901
-
Negative differential thermal conductance through vacuum
Applied Physics Letters
2012; 100 (4)
View details for DOI 044104 10.1063/1.3679694
-
Comment on "Nonreciprocal Light Propagation in a Silicon Photonic Circuit
Science
2012; 335 (6064)
View details for DOI 10.1126/science.1216682
-
Broadband light management using low-Q whispering gallery modes in spherical nanoshells
Nature Communications
2012; 3
View details for DOI 664 10.1038/ncomms1664
-
Stimulated Emission from a Single Excited Atom in a Waveguide
Physical Review Letters
2012; 108 (14)
View details for DOI 143602 10.1103/PhysRevLett.108.143602
-
Enhancing the waveguide-resonator optical force with an all-optical on-chip analog of electromagnetically induced transparency
Physical Review A
2012; 86 (6)
View details for DOI 10.1103/PhysRevA.86.063833
-
Electrically Driven Nonreciprocity Induced by Interband Photonic Transition on a Silicon Chip
Physical Review Letters
2012; 109 (3)
View details for DOI 10.1103/PhysRevLett.109.033901
-
Rectification of evanescent heat transfer between dielectric-coated and uncoated silicon carbide plates
Journal of Applied Physics
2012; 112 (2)
View details for DOI 10.1063/1.4737465
-
Extraordinarily high spectral sensitivity in refractive index sensors using multiple optical modes
Conference on Lasers and Electro-Optics (CLEO)
IEEE. 2012
View details for Web of Science ID 000310362403063
-
Deep sub-wavelength beam propagation, beam manipulation and imaging with extreme anisotropic meta-materials
Conference on Lasers and Electro-Optics (CLEO)
IEEE. 2012
View details for Web of Science ID 000310362403204
-
Photonic transitions can induce non-reciprocity and effective gauge field for photons
5th International Workshop on Theoretical and Computational Nano-Photonics (TaCoNa-Photonics)
AMER INST PHYSICS. 2012: 16–17
View details for DOI 10.1063/1.4750080
View details for Web of Science ID 000309602000005
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Choice of the Perfectly Matched Layer boundary condition for iterative solvers of the frequency-domain Maxwell's equations
Conference on Physics and Simulation of Optoelectronic Devices XX
SPIE-INT SOC OPTICAL ENGINEERING. 2012
View details for DOI 10.1117/12.906869
View details for Web of Science ID 000302993700016
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Improving fiber optic gyroscope performance using a laser and photonic-bandgap fiber
22nd International Conference on Optical Fiber Sensors (OFS)
SPIE-INT SOC OPTICAL ENGINEERING. 2012
View details for DOI 10.1117/12.2000380
View details for Web of Science ID 000313011500009
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Sensing With Slow Light in Fiber Bragg Gratings
IEEE SENSORS JOURNAL
2012; 12 (1): 156-163
View details for DOI 10.1109/JSEN.2011.2135343
View details for Web of Science ID 000297631700026
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Optical Transmission through Arbitrarily Located Subwavelength Apertures on Metal Films
Conference on Lasers and Electro-Optics (CLEO)
IEEE. 2012
View details for Web of Science ID 000310362403119
-
Numerically exact calculation of electromagnetic heat transfer between a dielectric sphere and plate
PHYSICAL REVIEW B
2011; 84 (24)
View details for DOI 10.1103/PhysRevB.84.245431
View details for Web of Science ID 000298116400010
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Few-photon transport in a waveguide coupled to a pair of colocated two-level atoms
PHYSICAL REVIEW A
2011; 84 (6)
View details for DOI 10.1103/PhysRevA.84.063832
View details for Web of Science ID 000298113300010
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Two-photon transport in a waveguide coupled to a cavity in a two-level system
PHYSICAL REVIEW A
2011; 84 (6)
View details for DOI 10.1103/PhysRevA.84.063803
View details for Web of Science ID 000297546700004
-
Wireless energy transfer with the presence of metallic planes
APPLIED PHYSICS LETTERS
2011; 99 (21)
View details for DOI 10.1063/1.3663576
View details for Web of Science ID 000297471000055
-
Nanophotonic light-trapping theory for solar cells
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
2011; 105 (2): 329-339
View details for DOI 10.1007/s00339-011-6617-4
View details for Web of Science ID 000296877900009
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Ultracompact nonreciprocal optical isolator based on guided resonance in a magneto-optical photonic crystal slab
OPTICS LETTERS
2011; 36 (21): 4254-4256
Abstract
We design an ultracompact optical isolator with normal incident geometry that operates with a bandwidth that is substantial for a device of this size. For operation in a telecommunication wavelength of 1.55 μm, the thickness of the device is less than 1 μm and the device supports an operating bandwidth of 400 GHz over which the minimum contrast ratio exceeds 25 dB. Our design utilizes guided resonance in a photonic crystal slab to enhance magneto-optical effects, and exploits interference effects among multiple resonances to create desired transmission spectral line shapes.
View details for Web of Science ID 000296734700045
View details for PubMedID 22048382
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Dielectric nanostructures for broadband light trapping in organic solar cells
OPTICS EXPRESS
2011; 19 (20): 19015-19026
Abstract
Organic bulk heterojunction solar cells are a promising candidate for low-cost next-generation photovoltaic systems. However, carrier extraction limitations necessitate thin active layers that sacrifice absorption for internal quantum efficiency or vice versa. Motivated by recent theoretical developments, we show that dielectric wavelength-scale grating structures can produce significant absorption resonances in a realistic organic cell architecture. We numerically demonstrate that 1D, 2D and multi-level ITO-air gratings lying on top of the organic solar cell stack produce a 8-15% increase in photocurrent for a model organic solar cell where PCDTBT:PC(71)BM is the organic semiconductor. Specific to this approach, the active layer itself remains untouched yet receives the benefit of light trapping by nanostructuring the top surface below which it lies. The techniques developed here are broadly applicable to organic semiconductors in general, and enable partial decoupling between active layer thickness and photocurrent generation.
View details for Web of Science ID 000295373800026
View details for PubMedID 21996842
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OPTICAL ISOLATION A non-magnetic approach
NATURE PHOTONICS
2011; 5 (9): 517-519
View details for DOI 10.1038/nphoton.2011.216
View details for Web of Science ID 000294412700006
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Temperature dependence of surface phonon polaritons from a quartz grating
JOURNAL OF APPLIED PHYSICS
2011; 110 (4)
View details for DOI 10.1063/1.3624603
View details for Web of Science ID 000294484300037
-
Microscopic theory of photonic one-way edge mode
PHYSICAL REVIEW B
2011; 84 (7)
View details for DOI 10.1103/PhysRevB.84.075477
View details for Web of Science ID 000293830800017
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Complete All-Optical Silica Fiber Isolator via Stimulated Brillouin Scattering
JOURNAL OF LIGHTWAVE TECHNOLOGY
2011; 29 (15): 2267-2275
View details for DOI 10.1109/JLT.2011.2158886
View details for Web of Science ID 000293712700001
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Efficient computation of equifrequency surfaces and density of states in photonic crystals using Dirichlet-to-Neumann maps
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
2011; 28 (8): 1837-1843
View details for Web of Science ID 000293330800009
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Nonvolatile bistable all-optical switch from mechanical buckling
APPLIED PHYSICS LETTERS
2011; 98 (24)
View details for DOI 10.1063/1.3600335
View details for Web of Science ID 000291803600004
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Transverse Electromagnetic Modes in Aperture Waveguides Containing a Metamaterial with Extreme Anisotropy
PHYSICAL REVIEW LETTERS
2011; 106 (22)
Abstract
We use metamaterials with extreme anisotropy to solve the fundamental problem of light transport in deep subwavelength apertures. By filling a simply connected aperture with an anisotropic medium, we decouple the cutoff frequency and the group velocity of modes inside apertures. In the limit of extreme anisotropy, all modes become purely transverse electromagnetic modes, free from geometrical dispersion, propagate with a velocity controlled by the transverse permittivity and permeability, and have zero cutoff frequency. We analyze physically realizable cases for a circular aperture and show a metamaterial design using existing materials.
View details for DOI 10.1103/PhysRevLett.106.223902
View details for Web of Science ID 000291199000006
View details for PubMedID 21702600
-
Perturbation theory for plasmonic modulation and sensing
PHYSICAL REVIEW B
2011; 83 (20)
View details for DOI 10.1103/PhysRevB.83.205131
View details for Web of Science ID 000290943800006
-
Extraordinarily high spectral sensitivity in refractive index sensors using multiple optical modes
OPTICS EXPRESS
2011; 19 (11): 10029-10040
Abstract
The extraordinary spectral sensitivity of surface plasmon resonance (SPR) sensors is commonly attributed to the modal overlap or unique dispersion of surface plasmons. In contrast to this belief, we show that such high sensitivity is due to the multi-mode nature of the sensing scheme. This concept of multi-mode sensing can be applied to dielectric systems as well in order to achieve similar extraordinary spectral sensitivity. We also show that there is a fundamental constraint between the spectral sensitivity and quality factor in such multi-mode sensing approach.
View details for Web of Science ID 000290852800001
View details for PubMedID 21643261
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Image transfer with subwavelength resolution to metal-dielectric interface
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
2011; 28 (5): 1335-1338
View details for Web of Science ID 000290026800054
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Experimental demonstration of two methods for controlling the group delay in a system with photonic-crystal resonators coupled to a waveguide
OPTICS LETTERS
2011; 36 (8): 1482-1484
Abstract
We measure the group delay in an on-chip photonic-crystal device with two resonators side coupled to a waveguide. We demonstrate that such a group delay can be controlled by tuning either the propagation phase of the waveguide or the frequency of the resonators.
View details for Web of Science ID 000290034500059
View details for PubMedID 21499397
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Design methodology for compact photonic-crystal-based wavelength division multiplexers
OPTICS LETTERS
2011; 36 (4): 591-593
Abstract
We present an extremely compact wavelength division multiplexer design, as well as a general framework for designing and optimizing frequency selective devices embedded in photonic crystals satisfying arbitrary design constraints. Our method is based on the Dirichlet-to-Neumman simulation method and uses low rank updates to the system to efficiently scan through many device designs.
View details for Web of Science ID 000287395500055
View details for PubMedID 21326466
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Design of subwavelength superscattering nanospheres
APPLIED PHYSICS LETTERS
2011; 98 (4)
View details for DOI 10.1063/1.3536475
View details for Web of Science ID 000286676600041
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Low Reflectivity and High Flexibility of Tin-Doped Indium Oxide Nanofiber Transparent Electrodes
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
2011; 133 (1): 27-29
Abstract
Tin-doped indium oxide (ITO) has found widespread use in solar cells, displays, and touch screens as a transparent electrode; however, two major problems with ITO remain: high reflectivity (up to 10%) and insufficient flexibility. Together, these problems severely limit the applications of ITO films for future optoelectronic devices. In this communication, we report the fabrication of ITO nanofiber network transparent electrodes. The nanofiber networks show optical reflectivity as low as 5% and high flexibility; the nanofiber networks can be bent to a radius of 2 mm with negligible changes in the sheet resistance.
View details for DOI 10.1021/ja109228e
View details for Web of Science ID 000286351100009
View details for PubMedID 21142042
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Angular constraint on light-trapping absorption enhancement in solar cells
APPLIED PHYSICS LETTERS
2011; 98 (1)
View details for DOI 10.1063/1.3532099
View details for Web of Science ID 000286009800007
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Tight Binding Model Study of Photonic One-Way Edge Mode
Conference on Lasers and Electro-Optics (CLEO)
IEEE. 2011
View details for Web of Science ID 000295612404123
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Nanophotonic light-trapping theory for solar cells
Applied Physics a-Materials Science & Processing
2011; 2: 105
View details for DOI 10.1007/s00339-011-6617-4
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Angular constraint on light-trapping absorption enhancement in solar cells
Applied Physics Letters
2011; 98 (1)
View details for DOI 011106 10.1063/1.3532099
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Two-photon transport in a waveguide coupled to a cavity in a two-level system
Physical Review A
2011; 84 (6)
View details for DOI 063803 10.1103/PhysRevA.84.063803
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Temperature dependence of surface phonon polaritons from a quartz grating
ournal of Applied Physics
2011; 110 (4)
View details for DOI 043517 10.1063/1.3624603
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Perturbation theory for plasmonic modulation and sensing
Physical Review B
2011; 83 (20)
View details for DOI 205131 10.1103/PhysRevB.83.205131
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Few-photon transport in a waveguide coupled to a pair of colocated two-level atoms
Physical Review A
2011; 84 (6)
View details for DOI 063832 10.1103/PhysRevA.84.063832
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Nonvolatile bistable all-optical switch from mechanical buckling
Applied Physics Letters
2011; 98 (24)
View details for DOI 241104 10.1063/1.3600335
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Wireless energy transfer with the presence of metallic planes
Applied Physics Letters
2011; 99 (21)
View details for DOI 214102 10.1063/1.3663576
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Numerically exact calculation of electromagnetic heat transfer between a dielectric sphere and plate
Physical Review B
2011; 84 (24)
View details for DOI 245431 10.1103/PhysRevB.84.245431
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Microscopic theory of photonic one-way edge mode
Physical Review B
2011; 84 (7)
View details for DOI 075477 10.1103/PhysRevB.84.075477
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Design of subwavelength superscattering nanospheres
Applied Physics Letters
2011; 98 (4)
View details for DOI 043101 10.1063/1.3536475
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Transverse electro-magnetic modes in apertures filled with an extreme anisotropic meta-material
Conference on Lasers and Electro-Optics (CLEO)
IEEE. 2011
View details for Web of Science ID 000295612404039
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Temporal Coupled-Mode Theory for Resonant Apertures
Conference on Lasers and Electro-Optics (CLEO)
IEEE. 2011
View details for Web of Science ID 000295612403367
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Dielectric nanostructures for broadband light trapping in organic solar cells
Conference on Lasers and Electro-Optics (CLEO)
IEEE. 2011
View details for Web of Science ID 000295612401071
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Tactical-grade interferometric fiber optic gyroscope driven with a narrow-linewidth laser
21st International Conference on Optical Fiber Sensors
SPIE-INT SOC OPTICAL ENGINEERING. 2011
View details for DOI 10.1117/12.886025
View details for Web of Science ID 000293567800067
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Slow Light in Fiber Bragg Gratings
Conference on Advances in Slow and Fast Light IV
SPIE-INT SOC OPTICAL ENGINEERING. 2011
View details for DOI 10.1117/12.880795
View details for Web of Science ID 000293700300010
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Integrated photonic structures for parallel fluorescence and refractive index biosensing
Conference on Photonic Microdevices/Microstructures for Sensing III
SPIE-INT SOC OPTICAL ENGINEERING. 2011
View details for DOI 10.1117/12.884228
View details for Web of Science ID 000294154700005
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Transverse Electromagnetic Modes in Aperture Waveguides Containing a Metamaterial with Extreme Anisotropy
Physical Review Letters
2011; 106 (22)
View details for DOI 223902 10.1103/PhysRevLett.106.223902
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Input-output formalism for few-photon transport in one-dimensional nanophotonic waveguides coupled to a qubit
PHYSICAL REVIEW A
2010; 82 (6)
View details for DOI 10.1103/PhysRevA.82.063821
View details for Web of Science ID 000286739800004
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Elements for Plasmonic Nanocircuits with Three-Dimensional Slot Waveguides
ADVANCED MATERIALS
2010; 22 (45): 5120-?
View details for DOI 10.1002/adma.201001440
View details for Web of Science ID 000285396400010
View details for PubMedID 20859937
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Nanostructured photon management for high performance solar cells
MATERIALS SCIENCE & ENGINEERING R-REPORTS
2010; 70 (3-6): 330-340
View details for DOI 10.1016/j.mser.2010.06.018
View details for Web of Science ID 000285706100017
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Sensitivity enhancement in photonic crystal slab biosensors
OPTICS EXPRESS
2010; 18 (22): 22702-22714
Abstract
Refractive index sensitivity of guided resonances in photonic crystal slabs is analyzed. We show that modal properties of guided resonances strongly affect spectral sensitivity and quality factors, resulting in substantial enhancement of refractive index sensitivity. A three-fold spectral sensitivity enhancement is demonstrated for suspended slab designs, in contrast to designs with a slab resting over a substrate. Spectral sensitivity values are additionally shown to be unaffected by quality factor reductions, which are common to fabricated photonic crystal nano-structures. Finally, we determine that proper selection of photonic crystal slab design parameters permits biosensing of a wide range of analytes, including proteins, antigens, and cells. These photonic crystals are compatible with large-area biosensor designs, permitting direct access to externally incident optical beams in a microfluidic device.
View details for Web of Science ID 000283560400009
View details for PubMedID 21164609
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Fundamental limit of nanophotonic light trapping in solar cells
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
2010; 107 (41): 17491-17496
Abstract
Establishing the fundamental limit of nanophotonic light-trapping schemes is of paramount importance and is becoming increasingly urgent for current solar cell research. The standard theory of light trapping demonstrated that absorption enhancement in a medium cannot exceed a factor of 4n(2)/sin(2)θ, where n is the refractive index of the active layer, and θ is the angle of the emission cone in the medium surrounding the cell. This theory, however, is not applicable in the nanophotonic regime. Here we develop a statistical temporal coupled-mode theory of light trapping based on a rigorous electromagnetic approach. Our theory reveals that the conventional limit can be substantially surpassed when optical modes exhibit deep-subwavelength-scale field confinement, opening new avenues for highly efficient next-generation solar cells.
View details for DOI 10.1073/pnas.1008296107
View details for Web of Science ID 000282809700012
View details for PubMedID 20876131
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The MicroArray Quality Control (MAQC)-II study of common practices for the development and validation of microarray-based predictive models
PHARMACOGENOMICS JOURNAL
2010: S5-S16
View details for DOI 10.1038/nbt.1665
View details for Web of Science ID 000285268700003
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Temporal coupled-mode theory for resonant apertures
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
2010; 27 (10): 1947-1956
View details for Web of Science ID 000282514500003
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Exponential suppression of thermal conductance using coherent transport and heterostructures
PHYSICAL REVIEW B
2010; 82 (11)
View details for DOI 10.1103/PhysRevB.82.113105
View details for Web of Science ID 000282168700001
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Fundamental limit of light trapping in grating structures
OPTICS EXPRESS
2010; 18 (19): A366-A380
Abstract
We use a rigorous electromagnetic approach to analyze the fundamental limit of light-trapping enhancement in grating structures. This limit can exceed the bulk limit of 4n², but has significant angular dependency. We explicitly show that 2D gratings provide more enhancement than 1D gratings. We also show the effects of the grating profile's symmetry on the absorption enhancement limit. Numerical simulations are applied to support the theory. Our findings provide general guidance for the design of grating structures for light-trapping solar cells.
View details for Web of Science ID 000285263500004
View details for PubMedID 21165067
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Full inversion of a two-level atom with a single-photon pulse in one-dimensional geometries
PHYSICAL REVIEW A
2010; 82 (3)
View details for DOI 10.1103/PhysRevA.82.033804
View details for Web of Science ID 000281650400011
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Tuning the coherent interaction in an on-chip photonic-crystal waveguide-resonator system
APPLIED PHYSICS LETTERS
2010; 97 (10)
View details for DOI 10.1063/1.3486686
View details for Web of Science ID 000282478800002
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Quantum critical coupling conditions for zero single-photon transmission through a coupled atom-resonator-waveguide system
PHYSICAL REVIEW A
2010; 82 (2)
View details for DOI 10.1103/PhysRevA.82.021802
View details for Web of Science ID 000281063500002
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Nanopatterned Metallic Films for Use As Transparent Conductive Electrodes in Optoelectronic Devices
NANO LETTERS
2010; 10 (8): 2944-2949
Abstract
We investigate the use of nanopatterned metallic films as transparent conductive electrodes in optoelectronic devices. We find that the physics of nanopatterned electrodes, which are often optically thin metallic films, differs from that of optically thick metallic films. We analyze the optical properties when performing a geometrical transformation that maintains the electrical properties. For one-dimensional patterns of metallic wires, the analysis favors tall and narrow wires. Our design principles remain valid for oblique incidence and readily carry over to two-dimensional patterns.
View details for DOI 10.1021/nl1011239
View details for Web of Science ID 000280728900035
View details for PubMedID 20698607
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The MicroArray Quality Control (MAQC)-IIII study of common practices for the development and validation of microarray-based predictive models
NATURE BIOTECHNOLOGY
2010; 28 (8): 827-U109
Abstract
Gene expression data from microarrays are being applied to predict preclinical and clinical endpoints, but the reliability of these predictions has not been established. In the MAQC-II project, 36 independent teams analyzed six microarray data sets to generate predictive models for classifying a sample with respect to one of 13 endpoints indicative of lung or liver toxicity in rodents, or of breast cancer, multiple myeloma or neuroblastoma in humans. In total, >30,000 models were built using many combinations of analytical methods. The teams generated predictive models without knowing the biological meaning of some of the endpoints and, to mimic clinical reality, tested the models on data that had not been used for training. We found that model performance depended largely on the endpoint and team proficiency and that different approaches generated models of similar performance. The conclusions and recommendations from MAQC-II should be useful for regulatory agencies, study committees and independent investigators that evaluate methods for global gene expression analysis.
View details for DOI 10.1038/nbt.1665
View details for Web of Science ID 000280757500023
View details for PubMedID 20676074
View details for PubMedCentralID PMC3315840
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Superscattering of Light from Subwavelength Nanostructures
PHYSICAL REVIEW LETTERS
2010; 105 (1)
Abstract
We provide a theoretical discussion of the scattering cross section of individual subwavelength structures. We show that, in principle, an arbitrarily large total cross section can be achieved, provided that one maximizes contributions from a sufficiently large number of channels. As a numerical demonstration, we present a subwavelength nanorod with a plasmonic-dielectric-plasmonic layer structure, where the scattering cross section far exceeds the single-channel limit, even in the presence of loss.
View details for DOI 10.1103/PhysRevLett.105.013901
View details for Web of Science ID 000279273600001
View details for PubMedID 20867445
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Optimization of the splice loss between photonic-bandgap fibers and conventional single-mode fibers
OPTICS LETTERS
2010; 35 (12): 1938-1940
Abstract
To understand the loss limitations of a splice between a hollow-core fiber and a conventional fiber, we use a numerical model to calculate the expected coupling loss between the NKT Photonics' HC-1550-02 fiber and a single-mode fiber (SMF) of arbitrary step-index profile. When the SMF parameters are optimized, the splice loss is predicted to be as low as approximately 0.6 dB. This minimum is believed to be largely due to mode-shape mismatch. These predictions are confirmed experimentally by optimizing the splice loss between this photonic-bandgap fiber and five SMFs with different mode-field diameters (MFDs) and V numbers. With the SMF-28 fiber, the measured loss is 1.3 dB, in excellent agreement with theory. Using a SMF with parameters close to the optimum values (MFD=7.2 microm and V=2.16), this loss was reduced to a new record value of 0.79 dB.
View details for Web of Science ID 000279435800004
View details for PubMedID 20548345
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Enhancing optical switching with coherent control
APPLIED PHYSICS LETTERS
2010; 96 (23)
View details for DOI 10.1063/1.3449572
View details for Web of Science ID 000278695900008
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Birefringence Analysis of Photonic-Bandgap Fibers Using the Hexagonal Yee's Cell
IEEE JOURNAL OF QUANTUM ELECTRONICS
2010; 46 (6): 920-930
View details for DOI 10.1109/JQE.2010.2040369
View details for Web of Science ID 000275367900004
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Nanodome Solar Cells with Efficient Light Management and Self-Cleaning
NANO LETTERS
2010; 10 (6): 1979-1984
Abstract
Here for the first time, we demonstrate novel nanodome solar cells, which have periodic nanoscale modulation for all layers from the bottom substrate, through the active absorber to the top transparent contact. These devices combine many nanophotonic effects to both efficiently reduce reflection and enhance absorption over a broad spectral range. Nanodome solar cells with only a 280 nm thick hydrogenated amorphous silicon (a-Si:H) layer can absorb 94% of the light with wavelengths of 400-800 nm, significantly higher than the 65% absorption of flat film devices. Because of the nearly complete absorption, a very large short-circuit current of 17.5 mA/cm(2) is achieved in our nanodome devices. Excitingly, the light management effects remain efficient over a wide range of incident angles, favorable for real environments with significant diffuse sunlight. We demonstrate nanodome devices with a power efficiency of 5.9%, which is 25% higher than the flat film control. The nanodome structure is not in principle limited to any specific material system and its fabrication is compatible with most solar manufacturing; hence it opens up exciting opportunities for a variety of photovoltaic devices to further improve performance, reduce materials usage, and relieve elemental abundance limitations. Lastly, our nanodome devices when modified with hydrophobic molecules present a nearly superhydrophobic surface and thus enable self-cleaning solar cells.
View details for DOI 10.1021/nl9034237
View details for Web of Science ID 000278449200002
View details for PubMedID 19891462
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Combining radiationless interference with evanescent field amplification
OPTICS LETTERS
2010; 35 (10): 1659-1661
Abstract
The conventional approach for radiationless interference exploits the interference of evanescent components for the purpose of deep-subwavelength focusing and image formation. As a result, deep subwavelength feature size is achieved at the price of severe exponential decay of the field strength. We propose to overcome the limitation of the conventional approach by combining radiationless interference with evanescent field amplification as provided by the surface polaritons at the interface between positive- and negative-dielectric materials. Our approach removes the exponential decay and, moreover, allows a much wider range of wave vectors, including both propagating and evanescent field components, to participate in the image-formation process.
View details for Web of Science ID 000277773400056
View details for PubMedID 20479841
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Temporal Coupled-Mode Theory for Fano Resonance in Light Scattering by a Single Obstacle
JOURNAL OF PHYSICAL CHEMISTRY C
2010; 114 (16): 7324-7329
View details for DOI 10.1021/jp9089722
View details for Web of Science ID 000276889300018
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Thermal Rectification through Vacuum
PHYSICAL REVIEW LETTERS
2010; 104 (15)
Abstract
We propose a mechanism for photon mediated thermal rectification through vacuum relying only on the temperature dependence of electromagnetic resonances. We also propose an example implementation consisting of two polytypes of silicon carbide, which exploits the interaction of temperature dependent surface phonon polaritons to achieve significant rectification.
View details for DOI 10.1103/PhysRevLett.104.154301
View details for Web of Science ID 000277001700021
View details for PubMedID 20481993
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Enhancement of optical absorption in thin-film organic solar cells through the excitation of plasmonic modes in metallic gratings
APPLIED PHYSICS LETTERS
2010; 96 (13)
View details for DOI 10.1063/1.3377791
View details for Web of Science ID 000276275300059
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Phase front design with metallic pillar arrays
OPTICS LETTERS
2010; 35 (6): 844-846
Abstract
We demonstrate numerically, using a three-dimensional finite-difference frequency-domain method, the ability to design a phase front using an array of metallic pillars. We show that in such structures, the local phase delay upon transmission can be tuned by local geometry. We apply this knowledge to demonstrate a metallic microlens. The presented design principles apply to a wider range of wavelength-size integrated photonic components.
View details for Web of Science ID 000275827000017
View details for PubMedID 20237618
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Integrated Nonmagnetic Optical Isolators Based on Photonic Transitions
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
2010; 16 (2): 459-466
View details for DOI 10.1109/JSTQE.2009.2026914
View details for Web of Science ID 000276418100015
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Multiplexed Five-Color Molecular Imaging of Cancer Cells and Tumor Tissues with Carbon Nanotube Raman Tags in the Near-Infrared
NANO RESEARCH
2010; 3 (3): 222-233
View details for DOI 10.1007/s12274-010-1025-1
View details for Web of Science ID 000275754900008
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Transmission Through a Scalar Wave Three-Dimensional Electromagnetic Metamaterial and the Implication for Polarization Control
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
2010; 10 (3): 1737-1740
Abstract
An interweaving-conductor metamaterial (ICM) is a metamaterial composed of multiple, interlocking, conducting networks. It exhibits unusual optical properties in the low-frequency linear-dispersion regime. In particular, two-network ICM supports only one, non-dispersive mode in the low frequency range, and is best described as an effective medium supporting a scalar wave in full three dimensions. We explore the light transmission properties of such a metamaterial, and the implications of a scalar wave medium for polarization control. Polarizers and polarization rotators with subwavelength sizes are numerically demonstrated.
View details for DOI 10.1166/jnn.2010.2036
View details for Web of Science ID 000273984800036
View details for PubMedID 20355567
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Mapping local optical densities of states in silicon photonic structures with nanoscale electron spectroscopy
PHYSICAL REVIEW B
2010; 81 (11)
View details for DOI 10.1103/PhysRevB.81.113102
View details for Web of Science ID 000276248800002
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Photonic Band Structure of Dispersive Metamaterials Formulated as a Hermitian Eigenvalue Problem
PHYSICAL REVIEW LETTERS
2010; 104 (8)
Abstract
We formulate the photonic band structure calculation of any lossless dispersive photonic crystal and optical metamaterial as a Hermitian eigenvalue problem. We further show that the eigenmodes of such lossless systems provide an orthonormal basis, which can be used to rigorously describe the behavior of lossy dispersive systems in general.
View details for DOI 10.1103/PhysRevLett.104.087401
View details for Web of Science ID 000275060000043
View details for PubMedID 20366963
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Semiconductor Nanowire Optical Antenna Solar Absorbers
NANO LETTERS
2010; 10 (2): 439-445
Abstract
Photovoltaic (PV) cells can serve as a virtually unlimited clean source of energy by converting sunlight into electrical power. Their importance is reflected in the tireless efforts that have been devoted to improving the electrical and structural properties of PV materials. More recently, photon management (PM) has emerged as a powerful additional means to boost energy conversion efficiencies. Here, we demonstrate an entirely new PM strategy that capitalizes on strong broad band optical antenna effects in one-dimensional semiconductor nanostructures to dramatically enhance absorption of sunlight. We show that the absorption of sunlight in Si nanowires (Si NWs) can be significantly enhanced over the bulk. The NW's optical properties also naturally give rise to an improved angular response. We propose that by patterning the silicon layer in a thin film PV cell into an array of NWs, one can boost the absorption for solar radiation by 25% while utilizing less than half of the semiconductor material (250% increase in the light absorption per unit volume of material). These results significantly advance our understanding of the way sunlight is absorbed by one-dimensional semiconductor nanostructures and provide a clear, intuitive guidance for the design of efficient NW solar cells. The presented approach is universal to any semiconductor and a wide range of nanostructures; as such, it provides a new PV platform technology.
View details for DOI 10.1021/nl9036627
View details for Web of Science ID 000274338800013
View details for PubMedID 20078065
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NANOPHOTONICS Magnet-controlled plasmons
NATURE PHOTONICS
2010; 4 (2): 76-77
View details for DOI 10.1038/nphoton.2009.280
View details for Web of Science ID 000275058600008
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Measurement of reduced backscattering noise in laser-driven fiber optic gyroscopes
OPTICS LETTERS
2010; 35 (2): 121-123
Abstract
We report what we believe to be the first demonstration of a laser-driven fiber optic gyroscope (FOG) built with an air-core fiber. Its phase noise is measured to be 130 murad/ radicalHz. When the sensing fiber is replaced with a conventional fiber, this figure drops to 12 murad/ radicalHz. Comparison between these values suggests that the air-core fiber gyro is most likely not limited solely by backscattering noise but by reflections at the solid-core/air-core interface. By minimizing additional noise sources and reducing the air-core fiber loss to its theoretical limit (approximately 0.1 dB/km), we predict that the backscattering noise of the laser-driven air-core FOG will drop below the level of current FOGs. Compared with commercial FOGs, this FOG will exhibit a lower noise, improved thermal and mean-wavelength stability, and reduced magnetic-field sensitivity.
View details for Web of Science ID 000273879200010
View details for PubMedID 20081941
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Optical resonances created by photonic transitions
APPLIED PHYSICS LETTERS
2010; 96 (1)
View details for DOI 10.1063/1.3279130
View details for Web of Science ID 000273473200008
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Experimental demonstration of an all-optical analogue to the superradiance effect in an on-chip photonic crystal resonator system
PHYSICAL REVIEW B
2010; 81 (4)
View details for DOI 10.1103/PhysRevB.81.041101
View details for Web of Science ID 000274002500001
- Absorber and emitter for solar thermophotovoltaic systems to achieve efficiency exceeding the Shockley-Queisser limit Optics Express 2010; 17 (17): 15145-15159
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Full inversion of a two-level atom with a single-photon pulse in one-dimensional geometries
Physical Review A
2010; 82 (3)
View details for DOI 033804 10.1103/PhysRevA.82.033804
-
Experimental demonstration of an all-optical analogue to the superradiance effect in an on-chip photonic crystal resonator system
Physical Review B
2010; 81 (4)
View details for DOI 041101 10.1103/PhysRevB.81.041101
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Exponential suppression of thermal conductance using coherent transport and heterostructures
Physical Review B
2010; 82 (11)
View details for DOI 113105 10.1103/PhysRevB.82.113105
-
Enhancement of optical absorption in thin-film organic solar cells through the excitation of plasmonic modes in metallic gratings
Applied Physics Letters
2010; 96 (13)
View details for DOI 133302 10.1063/1.3377791
-
Tuning the coherent interaction in an on-chip photonic-crystal waveguide-resonator system
Applied Physics Letters
2010; 97 (10)
View details for DOI 101102 10.1063/1.3486686
-
Input-output formalism for few-photon transport in one-dimensional nanophotonic waveguides coupled to a qubit
Physical Review A
2010; 82 (6)
View details for DOI 063821 10.1103/PhysRevA.82.063821
-
Thermal Rectification through Vacuum
Physical Review Letters
2010; 104 (15)
View details for DOI 154301 10.1103/PhysRevLett.104.154301
-
Superscattering of Light from Subwavelength Nanostructures
Physical Review Letters
2010; 105 (1)
View details for DOI 013901 10.1103/PhysRevLett.105.013901
-
Elements for Plasmonic Nanocircuits with Three-Dimensional Slot Waveguides
Advanced Materials
2010; 22 (45): 5120-+
View details for DOI 10.1002/adma.201001440
-
Quantum critical coupling conditions for zero single-photon transmission through a coupled atom-resonator-waveguide system
Physical Review A
2010; 82 (2)
View details for DOI 021802 10.1103/PhysRevA.82.021802
-
Photonic Band Structure of Dispersive Metamaterials Formulated as a Hermitian Eigenvalue Problem
Physical Review Letters
2010; 104 (8)
View details for DOI 087401 10.1103/PhysRevLett.104.087401
-
Optical resonances created by photonic transitions
Applied Physics Letters
2010; 96 (1)
View details for DOI 011108 10.1063/1.3279130
-
Mapping local optical densities of states in silicon photonic structures with nanoscale electron spectroscopy
Physical Review B
2010; 81 (11)
View details for DOI 113102 10.1103/PhysRevB.81.113102
-
Enhancing optical switching with coherent control
Applied Physics Letters
2010; 96 (23)
View details for DOI 231108 10.1063/1.3449572
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Deep-subwavelength focusing and steering of light in an aperiodic metallic waveguide array
Conference on Integrated Optics - Devices, Materials, and Technologies XIV
SPIE-INT SOC OPTICAL ENGINEERING. 2010
View details for DOI 10.1117/12.842692
View details for Web of Science ID 000284398000020
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Optimizing Nano-patterned Metal Films for Use as Transparent Electrodes in Optoelectronic Devices
Conference on Lasers and Electro-Optics (CLEO)/Quantum Electronics and Laser Science Conference (QELS)
IEEE. 2010
View details for Web of Science ID 000290513603066
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Dynamic Photonic Structure for Integrated Photonics
Conference on Optoelectronic Integrated Circuits XII
SPIE-INT SOC OPTICAL ENGINEERING. 2010
View details for DOI 10.1117/12.846032
View details for Web of Science ID 000284396700018
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LIMIT OF NANOPHOTONIC LIGHT-TRAPPING IN SOLAR CELLS
35th IEEE Photovoltaic Specialists Conference
IEEE. 2010: 76–78
View details for Web of Science ID 000287579500016
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Fundamental Limit of Nanophotonic Light-trapping in Solar Cells
Conference on Lasers and Electro-Optics (CLEO)/Quantum Electronics and Laser Science Conference (QELS)
IEEE. 2010
View details for Web of Science ID 000290513600264
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Fundamental Limit of Nanophotonic Light-trapping in Solar Cells
Conference on Next Generation (Nano) Photonic and Cell Technologies for Solar Energy Conversion
SPIE-INT SOC OPTICAL ENGINEERING. 2010
View details for DOI 10.1117/12.861457
View details for Web of Science ID 000285841900015
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Phase Front Design with Metallic Pillar Arrays
Conference on Lasers and Electro-Optics (CLEO)/Quantum Electronics and Laser Science Conference (QELS)
IEEE. 2010
View details for Web of Science ID 000290513603159
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Temporal coupled-mode theory for the Fano resonance in light scattering and its applications
Conference on Lasers and Electro-Optics (CLEO)/Quantum Electronics and Laser Science Conference (QELS)
IEEE. 2010
View details for Web of Science ID 000290513603080
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Directional Photofluidization Lithography for Nanoarchitectures with Controlled Shapes and Sizes
NANO LETTERS
2010; 10 (1): 296-304
Abstract
Highly ordered metallic nanostructures have attracted an increasing interest in nanoscale electronics, photonics, and spectroscopic imaging. However, methods typically used for fabricating metallic nanostructures, such as direct writing and template-based nanolithography, have low throughput and are, moreover, limited to specific fabricated shapes such as holes, lines, and prisms, respectively. Herein, we demonstrate directional photofluidization lithography (DPL) as a new method to address the aforementioned problems of current nanolithography. The key idea of DPL is the use of photoreconfigurable polymer arrays to be molded in metallic nanostructures instead of conventional colloids or cross-linked polymer arrays. The photoreconfiguration of polymers by directional photofluidization allows unprecedented control over the sizes and shapes of metallic nanostructures. Besides the capability for precise control of structural features, DPL ensures scalable, parallel, and cost-effective processing, highly compatible with high-throughput fabrication. Therefore, DPL can expand not only the potential for specific metallic nanostructure applications but also large-scale innovative nanolithography.
View details for DOI 10.1021/nl903570c
View details for Web of Science ID 000273428700050
View details for PubMedID 20017565
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Resonance-enhanced optical forces between coupled photonic crystal slabs
OPTICS EXPRESS
2009; 17 (24): 21897-21909
Abstract
The behaviors of lateral and normal optical forces between coupled photonic crystal slabs are analyzed. We show that the optical force is periodic with displacement, resulting in stable and unstable equilibrium positions. Moreover, the forces are strongly enhanced by guided resonances of the coupled slabs. Such enhancement is particularly prominent near dark states of the system, and the enhancement effect is strongly dependent on the types of guided resonances involved. These structures lead to enhancement of light-induced pressure over larger areas, in a configuration that is directly accessible to externally incident, free-space optical beams.
View details for Web of Science ID 000272229400061
View details for PubMedID 19997434
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Two-electron transport in a quantum waveguide having a single Anderson impurity
NEW JOURNAL OF PHYSICS
2009; 11
View details for DOI 10.1088/1367-2630/11/11/113024
View details for Web of Science ID 000271649200009
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Large single-molecule fluorescence enhancements produced by a bowtie nanoantenna
NATURE PHOTONICS
2009; 3 (11): 654-657
View details for DOI 10.1038/NPHOTON.2009.187
View details for Web of Science ID 000272302700012
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Universal features of coherent photonic thermal conductance in multilayer photonic band gap structures
PHYSICAL REVIEW B
2009; 80 (15)
View details for DOI 10.1103/PhysRevB.80.155135
View details for Web of Science ID 000271352000068
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Wave-vector space picture for radiationless focusing and beaming
OPTICS LETTERS
2009; 34 (19): 2967-2969
Abstract
Radiationless interference of an electromagnetic wave occurs in the near field when the feature sizes of the waves are at the deep subwavelength scale. We present the propagation in such a regime using a wave-vector space picture. Using this picture, we reproduce the condition to achieve near-field focusing. We also design the initial field distribution needed for near-field beaming, where an intensity distribution maintains its shape as it propagates. We conclude the discussion by proposing a possible implementation of the near-field beaming scheme.
View details for Web of Science ID 000270366800030
View details for PubMedID 19794784
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Side-coupled cavity model for surface plasmon-polariton transmission across a groove
OPTICS EXPRESS
2009; 17 (20): 17837-17848
Abstract
We demonstrate that the transmission properties of surface plasmon-polaritons (SPPs) across a rectangular groove in a metallic film can be described by an analytical model that treats the groove as a side-coupled cavity to propagating SPPs on the metal surface. The coupling efficiency to the groove is quantified by treating it as a truncated metal-dielectric-metal (MDM) waveguide. Finite-difference frequency-domain (FDFD) simulations and mode orthogonality relations are employed to derive the basic scattering coefficients that describe the interaction between the relevant modes in the system. The modeled SPP transmission and reflection intensities show excellent agreement with full-field simulations over a wide range of groove dimensions, validating this intuitive model. The model predicts the sharp transmission minima that occur whenever an incident SPP resonantly couples to the groove. We also for the first time show the importance of evanescent, reactive MDM SPP modes to the transmission behavior. SPPs that couple to this mode are resonantly enhanced upon reflection from the bottom of the groove, leading to high field intensities and sharp transmission minima across the groove. The resonant behavior exhibited by the grooves has a number of important device applications, including SPP mirrors, filters, and modulators.
View details for Web of Science ID 000270295300065
View details for PubMedID 19907571
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Ring-coupled Mach-Zehnder interferometer optimized for sensing
APPLIED OPTICS
2009; 48 (26): 4874-4879
Abstract
We demonstrate numerically that the theoretical maximum sensitivity of a ring-coupled Mach-Zehnder interferometer (MZI) optimized as a sensor is about 30% greater than the optimized sensitivity of a conventional single-bus ring sensor with an identical ring perimeter and loss. The ring-coupled MZI sensor also achieves its greater sensitivity with a 25% lower circulating power, which is useful for the suppression of undesirable nonlinear effects.
View details for Web of Science ID 000270117600004
View details for PubMedID 19745847
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Classification of the Core Modes of Hollow-Core Photonic-Bandgap Fibers
IEEE JOURNAL OF QUANTUM ELECTRONICS
2009; 45 (9): 1192-1200
View details for DOI 10.1109/JQE.2009.2019767
View details for Web of Science ID 000269389600001
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Performance comparison of slow-light coupled-resonator optical gyroscopes
LASER & PHOTONICS REVIEWS
2009; 3 (5): 452-465
View details for DOI 10.1002/lpor.200810052
View details for Web of Science ID 000269922000003
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Overcoming gain-bandwidth product constraint in slow light Raman amplification with the use of light-stopping schemes
APPLIED PHYSICS LETTERS
2009; 95 (8)
View details for DOI 10.1063/1.3211126
View details for Web of Science ID 000269723200003
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Planar metallic nanoscale slit lenses for angle compensation
APPLIED PHYSICS LETTERS
2009; 95 (7)
View details for DOI 10.1063/1.3211875
View details for Web of Science ID 000269288300012
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Absorber and emitter for solar thermophotovoltaic systems to achieve efficiency exceeding the Shockley-Queisser limit
OPTICS EXPRESS
2009; 17 (17): 15145-15159
Abstract
We present theoretical considerations as well as detailed numerical design of absorber and emitter for Solar Thermophotovoltaics (STPV) applications. The absorber, consisting of an array of tungsten pyramids, was designed to provide near-unity absorptivity over all solar wavelengths for a wide angular range, enabling it to absorb light effectively from solar sources regardless of concentration. The emitter, a tungsten slab with Si/SiO(2) multilayer stack, provides a sharp emissivity peak at the solar cell band-gap while suppressing emission at lower frequencies. We show that, under a suitable light concentration condition, and with a reasonable area ratio between the emitter and absorber, a STPV system employing such absorber-emitter pair and a single-junction solar cell can attain efficiency that exceeds the Shockley-Queisser limit.
View details for Web of Science ID 000269232800069
View details for PubMedID 19687992
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Enhancement of optics-to-THz conversion efficiency by metallic slot waveguides
OPTICS EXPRESS
2009; 17 (16): 13502-13515
Abstract
A metallic slot waveguide, with a dielectric strip embedded within, is investigated for the purpose of enhancing the optics-to-THz conversion efficiency using the difference-frequency generation (DFG) process. To describe the frequency conversion process in such lossy waveguides, a fully-vectorial coupled-mode theory is developed. Using the coupled-mode theory, we outline the basic theoretical requirements for efficient frequency conversion, which include the needs to achieve large coupling coefficients, phase matching, and low propagation loss for both the optical and THz waves. Following these requirements, a metallic waveguide is designed by considering the trade-off between modal confinement and propagation loss. Our numerical calculation shows that the conversion efficiency in these waveguide structures can be more than one order of magnitude larger than what has been achieved using dielectric waveguides. Based on the distinct impact of the slot width on the optical and THz modal dispersion, we propose a two-step method to realize the phase matching for general pump wavelengths.
View details for Web of Science ID 000268843700027
View details for PubMedID 19654758
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Modeling of Plasmonic Waveguide Components and Networks
JOURNAL OF COMPUTATIONAL AND THEORETICAL NANOSCIENCE
2009; 6 (8): 1808-1826
View details for DOI 10.1166/jctn.2009.1244
View details for Web of Science ID 000269887100006
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Measurements of the Birefringence and Verdet Constant in an Air-Core Fiber
JOURNAL OF LIGHTWAVE TECHNOLOGY
2009; 27 (15): 3194-3201
View details for DOI 10.1109/JLT.2008.2009546
View details for Web of Science ID 000268284200010
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Deep-Subwavelength Focusing and Steering of Light in an Aperiodic Metallic Waveguide Array
PHYSICAL REVIEW LETTERS
2009; 103 (3)
Abstract
We consider an aperiodic array of coupled metallic waveguides with varying subwavelength widths. For an incident plane wave, we numerically demonstrate that a focus of as small as one-hundredth of a wavelength can be achieved for a focal distance that is much longer than the wavelength. Moreover, the focusing behavior can be controlled by changing either the incident wavelength or the angle of incidence, thus providing the capability of nanoscale beam steering. We show that the behavior of such subwavelength focusing can be understood using Hamiltonian optics.
View details for DOI 10.1103/PhysRevLett.103.033902
View details for Web of Science ID 000268088300027
View details for PubMedID 19659280
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Understanding the dispersion of coaxial plasmonic structures through a connection with the planar metal-insulator-metal geometry
APPLIED PHYSICS LETTERS
2009; 94 (23)
View details for DOI 10.1063/1.3148692
View details for Web of Science ID 000266977100011
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Capturing light pulses into a pair of coupled photonic crystal cavities
APPLIED PHYSICS LETTERS
2009; 94 (23)
View details for DOI 10.1063/1.3141485
View details for Web of Science ID 000266977100009
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Optical isolation based on nonreciprocal phase shift induced by interband photonic transitions
APPLIED PHYSICS LETTERS
2009; 94 (17)
View details for DOI 10.1063/1.3127531
View details for Web of Science ID 000265738700016
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Three-Dimensional Metamaterials with an Ultrahigh Effective Refractive Index over a Broad Bandwidth
PHYSICAL REVIEW LETTERS
2009; 102 (9)
Abstract
The authors introduce a general mechanism, based on electrostatic and magnetostatic considerations, for designing three-dimensional isotropic metamaterials that possess an enhanced refractive index over an extremely large frequency range. The mechanism allows nearly independent control of effective electric permittivity and magnetic permeability without the use of resonant elements.
View details for DOI 10.1103/PhysRevLett.102.093903
View details for Web of Science ID 000263911900022
View details for PubMedID 19392520
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Extraordinary optical absorption through subwavelength slits
OPTICS LETTERS
2009; 34 (5): 686-688
Abstract
We report on the ability of resonant plasmonic slits to efficiently concentrate electromagnetic energy into a nanoscale volume of absorbing material placed inside or directly behind the slit. This gives rise to extraordinary optical absorption characterized by an absorption enhancement factor that well exceeds the enhancements seen for extraordinary optical transmission through slits. A semianalytic Fabry-Perot model for the resonant absorption is developed and shown to quantitatively agree with full-field simulations. We show that absorption enhancements of nearly 1000% can be realized at 633 nm for slits in aluminum films filled with silicon. This effect can be utilized in a wide range of applications, including high-speed photodetectors, optical lithography and recording, and biosensors.
View details for Web of Science ID 000264522400046
View details for PubMedID 19252593
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Complete optical isolation created by indirect interband photonic transitions
NATURE PHOTONICS
2009; 3 (2): 91-94
View details for DOI 10.1038/NPHOTON.2008.273
View details for Web of Science ID 000263181100012
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Theory of single-photon transport in a single-mode waveguide. II. Coupling to a whispering-gallery resonator containing a two-level atom
PHYSICAL REVIEW A
2009; 79 (2)
View details for DOI 10.1103/PhysRevA.79.023838
View details for Web of Science ID 000263815000176
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Theory of single-photon transport in a single-mode waveguide. I. Coupling to a cavity containing a two-level atom
PHYSICAL REVIEW A
2009; 79 (2)
View details for DOI 10.1103/PhysRevA.79.023837
View details for Web of Science ID 000263815000175
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Optical Absorption Enhancement in Amorphous Silicon Nanowire and Nanocone Arrays
NANO LETTERS
2009; 9 (1): 279-282
Abstract
Hydrogenated amorphous Si (a-Si:H) is an important solar cell material. Here we demonstrate the fabrication of a-Si:H nanowires (NWs) and nanocones (NCs), using an easily scalable and IC-compatible process. We also investigate the optical properties of these nanostructures. These a-Si:H nanostructures display greatly enhanced absorption over a large range of wavelengths and angles of incidence, due to suppressed reflection. The enhancement effect is particularly strong for a-Si:H NC arrays, which provide nearly perfect impedance matching between a-Si:H and air through a gradual reduction of the effective refractive index. More than 90% of light is absorbed at angles of incidence up to 60 degrees for a-Si:H NC arrays, which is significantly better than NW arrays (70%) and thin films (45%). In addition, the absorption of NC arrays is 88% at the band gap edge of a-Si:H, which is much higher than NW arrays (70%) and thin films (53%). Our experimental data agree very well with simulation. The a-Si:H nanocones function as both absorber and antireflection layers, which offer a promising approach to enhance the solar cell energy conversion efficiency.
View details for DOI 10.1021/nl802886y
View details for Web of Science ID 000262519100052
View details for PubMedID 19072061
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Theory of single-photon transport in a single-mode waveguide. II. Coupling to a whispering-gallery resonator containing a two-level atom
Physical Review A
2009; 79 (2)
View details for DOI 023838 10.1103/PhysRevA.79.023838
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Overcoming gain-bandwidth product constraint in slow light Raman amplification with the use of light-stopping schemes
Applied Physics Letters
2009; 95 (8)
View details for DOI 081103 10.1063/1.3211126
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Two-electron transport in a quantum waveguide having a single Anderson impurity
New Journal of Physics
2009; 11
View details for DOI 113024 10.1088/1367-2630/11/11/113024
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Planar metallic nanoscale slit lenses for angle compensation
Applied Physics Letters
2009; 95 (7)
View details for DOI 071112 10.1063/1.3211875
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Deep-Subwavelength Focusing and Steering of Light in an Aperiodic Metallic Waveguide Array
Physical Review Letters
2009; 103 (3)
View details for DOI 033902 10.1103/PhysRevLett.103.033902
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Universal features of coherent photonic thermal conductance in multilayer photonic band gap structures
Physical Review B
2009; 80 (15)
View details for DOI 155135 10.1103/PhysRevB.80.155135
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Understanding the dispersion of coaxial plasmonic structures through a connection with the planar metal-insulator-metal geometry
Applied Physics Letters
2009; 94 (23)
View details for DOI 231111 10.1063/1.3148692
-
Modal analysis and coupling in metal-insulator-metal waveguides
Physical Review B
2009; 79 (3)
View details for DOI 035120 10.1103/PhysRevB.79.035120
- Three-Dimensional Metamaterials with an Ultrahigh Effective Refractive Index over a Broad Bandwidth Physical Review Letters 2009; 102 (9)
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Theory of single-photon transport in a single-mode waveguide. I. Coupling to a cavity containing a two-level atom
Physical Review A
2009; 79 (2)
View details for DOI 023837 10.1103/PhysRevA.79.023837
-
Optical isolation based on nonreciprocal phase shift induced by interband photonic transitions
Applied Physics Letters
2009; 94 (17)
View details for DOI 171116 10.1063/1.3127531
-
Capturing light pulses into a pair of coupled photonic crystal cavities
Applied Physics Letters
2009; 94 (23)
View details for DOI 231109 10.1063/1.3141485
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Dynamics of optical modes in modulated photonic structures
IEEE/LEOS Winter Topicals Meeting
IEEE. 2009: 106–107
View details for Web of Science ID 000267006500055
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Optical Resonances Created by Photonic Transitions
Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference (CLEO/QELS 2009)
IEEE. 2009: 1327–1328
View details for Web of Science ID 000274751300667
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Planar Lenses Based on Nanoscale Slit Arrays in a Metallic Film
Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference (CLEO/QELS 2009)
IEEE. 2009: 3224–3225
View details for Web of Science ID 000274751302598
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Simple Analytical Expression for the Dispersion of Plasmonic Structures with Coaxial Geometry
Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference (CLEO/QELS 2009)
IEEE. 2009: 1838–1839
View details for Web of Science ID 000274751301244
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Integrated nanophotonics: dynamic optical isolation, and nanoscale far-field focusing in aperiodic plasmonic waveguide array
22nd Annual Meeting of the IEEE-Photonics-Society
IEEE. 2009: 646–647
View details for Web of Science ID 000279577600331
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Light Trapping With a Few Cavities
Conference on Advances in Slow and Fast Light II
SPIE-INT SOC OPTICAL ENGINEERING. 2009
View details for DOI 10.1117/12.816328
View details for Web of Science ID 000285377800018
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Minimizing Coherent Thermal Conductance Using Multi-Layer Photonic Crystal Heterostructures
Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference (CLEO/QELS 2009)
IEEE. 2009: 2035–2036
View details for Web of Science ID 000274751301345
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Performance Limitation of a Coupled Resonant Optical Waveguide Gyroscope
JOURNAL OF LIGHTWAVE TECHNOLOGY
2009; 27 (1-4): 47-54
View details for DOI 10.1109/JLT.2008.927753
View details for Web of Science ID 000263768300006
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Modal analysis and coupling in metal-insulator-metal waveguides
PHYSICAL REVIEW B
2009; 79 (3)
View details for DOI 10.1103/PhysRevB.79.035120
View details for Web of Science ID 000262978200055
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Planar Lenses Based on Nanoscale Slit Arrays in a Metallic Film
NANO LETTERS
2009; 9 (1): 235-238
Abstract
We experimentally demonstrate planar lenses based on nanoscale slit arrays in a metallic film. Our lens structures consist of optically thick gold films with micron-size arrays of closely spaced, nanoscale slits of varying widths milled using a focused ion beam. We find excellent agreement between electromagnetic simulations of the design and confocal measurements on manufactured structures. We provide guidelines for lens design and show how actual lens behavior deviates from simple theory.
View details for DOI 10.1021/nl802830y
View details for Web of Science ID 000262519100044
View details for PubMedID 19053795
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Transmission Line and Equivalent Circuit Models for Plasmonic Waveguide Components
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
2008; 14 (6): 1462-1472
View details for DOI 10.1109/JSTQE.2008.924431
View details for Web of Science ID 000262220500008
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Protein microarrays with carbon nanotubes as multicolor Raman labels
NATURE BIOTECHNOLOGY
2008; 26 (11): 1285-1292
Abstract
The current sensitivity of standard fluorescence-based protein detection limits the use of protein arrays in research and clinical diagnosis. Here, we use functionalized, macromolecular single-walled carbon nanotubes (SWNTs) as multicolor Raman labels for highly sensitive, multiplexed protein detection in an arrayed format. Unlike fluorescence methods, Raman detection benefits from the sharp scattering peaks of SWNTs with minimal background interference, affording a high signal-to-noise ratio needed for ultra-sensitive detection. When combined with surface-enhanced Raman scattering substrates, the strong Raman intensity of SWNT tags affords protein detection sensitivity in sandwich assays down to 1 fM--a three-order-of-magnitude improvement over most reports of fluorescence-based detection. We use SWNT Raman tags to detect human autoantibodies against proteinase 3, a biomarker for the autoimmune disease Wegener's granulomatosis, diluted up to 10(7)-fold in 1% human serum. SWNT Raman tags are not subject to photobleaching or quenching. By conjugating different antibodies to pure (12)C and (13)C SWNT isotopes, we demonstrate multiplexed two-color SWNT Raman-based protein detection.
View details for DOI 10.1038/nbt.1501
View details for Web of Science ID 000260832200024
View details for PubMedID 18953353
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Analysis of guided-resonance-based polarization beam splitting in photonic crystal slabs
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION
2008; 25 (11): 2680-2692
Abstract
We present an analysis of the phase and amplitude responses of guided resonances in a photonic crystal slab. Through this analysis, we obtain the general rules and conditions under which a photonic crystal slab can be employed as a general elliptical polarization beam splitter, separating an incoming beam equally into its two orthogonal constituents, so that half the power is reflected in one polarization state, and half the power is transmitted in the other state. We show that at normal incidence a photonic crystal slab acts as a dual quarter-wave retarder in which the fast and slow axes are switched for reflection and transmission. We also analyze the case where such a structure operates at oblique incidences. As a result we show that the effective dielectric constant of the photonic crystal slab imposes the Brewster angle as a boundary, separating two ranges of angles with different mechanisms of polarization beam splitting. We show that the diattenuation can be tuned from zero to one to make the structure a circular or linear polarization beam splitter. We verify our analytical analysis through finite-difference time-domain simulations and experimental measurements at infrared wavelengths.
View details for Web of Science ID 000261520700008
View details for PubMedID 18978845
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Completely Capturing Light Pulses in a Few Dynamically Tuned Microcavities
JOURNAL OF LIGHTWAVE TECHNOLOGY
2008; 26 (21-24): 3784-3793
View details for DOI 10.1109/JLT.2008.2005511
View details for Web of Science ID 000263225000033
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Multiplexed multicolor Raman imaging of live cells with isotopically modified single walled carbon nanotubes
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
2008; 130 (41): 13540-?
Abstract
We show that single walled carbon nanotubes (SWNTs) with different isotope compositions exhibit distinct Raman G-band peaks and can be used for multiplexed multicolor Raman imaging of biological systems. Cancer cells with specific receptors are selectively labeled with three differently "colored" SWNTs conjugated with various targeting ligands including Herceptin (anti-Her2), Erbitux (anti-Her1), and RGD peptide, allowing for multicolor Raman imaging of cells in a multiplexed manner. SWNT Raman signals are highly robust against photobleaching, allowing long-term imaging and tracking. With narrow peak features, SWNT Raman signals are easily differentiated from the autofluorescence background. The SWNT Raman excitation and scattering photons are in the near-infrared region, which is the most transparent optical window for biological systems in vitro and in vivo. Thus, SWNTs are novel Raman tags promising for multiplexed biological detection and imaging.
View details for DOI 10.1021/ja806242t
View details for Web of Science ID 000259924000017
View details for PubMedID 18803379
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Tungsten black absorber for solar light with wide angular operation range
APPLIED PHYSICS LETTERS
2008; 92 (21)
View details for DOI 10.1063/1.2936997
View details for Web of Science ID 000256303500007
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Tuning coherent radiative thermal conductance in multilayer photonic crystals
APPLIED PHYSICS LETTERS
2008; 92 (10)
View details for DOI 10.1063/1.2890433
View details for Web of Science ID 000253989300106
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Aligning microcavity resonances in silicon photonic-crystal slabs using laser-pumped thermal tuning
APPLIED PHYSICS LETTERS
2008; 92 (10)
View details for DOI 10.1063/1.2896615
View details for Web of Science ID 000253989300114
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Crosstalk between three-dimensional plasmonic slot waveguides
OPTICS EXPRESS
2008; 16 (3): 2129-2140
Abstract
We investigate in detail the crosstalk between plasmonic slot waveguides. We show that the coupling behavior of deep subwavelength three-dimensional (3-D) plasmonic slot waveguides is very different from the one of two-dimensional (2-D) metal-dielectric-metal (MDM) plasmonic waveguides. While in the 2-D case the coupling occurs only through the metal, in the 3-D case the coupling occurs primarily through the dielectric, in which the evanescent tail is much larger compared to the one in the metal. Thus, in most cases the coupling between 3-D plasmonic slot waveguides is much stronger than the coupling between the corresponding 2-D MDM plasmonic waveguides. Such strong coupling can be exploited to form directional couplers using plasmonic slot waveguides. On the other hand, with appropriate design, the crosstalk between 3-D plasmonic slot waveguides can be reduced even below the crosstalk levels of 2-D MDM plasmonic waveguides, without significantly affecting their modal size and attenuation length. Thus, 3-D plasmonic slot waveguides can be used for ultradense integration of optoelectronic components.
View details for Web of Science ID 000252932500081
View details for PubMedID 18542293
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Gain-induced switching in metal-dielectric-metal plasmonic waveguides
APPLIED PHYSICS LETTERS
2008; 92 (4)
View details for DOI 10.1063/1.2839324
View details for Web of Science ID 000252860400017
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One-way electromagnetic waveguide formed at the interface between a plasmonic metal under a static magnetic field and a photonic crystal
PHYSICAL REVIEW LETTERS
2008; 100 (2)
Abstract
We demonstrate theoretically the existence of one-way electromagnetic modes in a waveguide formed between a semi-infinite photonic crystal structure and a semi-infinite metal region under a static magnetic field. Such a waveguide provides a frequency range where only one propagating direction is allowed. In this frequency range, disorder-induced scattering is completely suppressed. Such a waveguide also modifies the basic properties of waveguide-cavity interaction.
View details for DOI 10.1103/PhysRevLett.100.023902
View details for Web of Science ID 000252471200031
View details for PubMedID 18232868
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GaN-based two-dimensional surface-emitting photonic crystal lasers with AlN/GaN distributed Bragg reflector
APPLIED PHYSICS LETTERS
2008; 92 (1)
View details for DOI 10.1063/1.2831716
View details for Web of Science ID 000252284200029
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Propagating plasmonic mode in nanoscale apertures and its implications for extraordinary transmission
JOURNAL OF NANOPHOTONICS
2008; 2
View details for DOI 10.1117/1.2890424
View details for Web of Science ID 000262931600013
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Tungsten black absorber for solar light with wide angular operation range
Applied Physics Letters
2008; 92 (21)
View details for DOI 211107 10.1063/1.2936997
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Propagating plasmonic mode in nanoscale apertures and its implications for extraordinary transmission
Journal of Nanophotonics
2008; 2
View details for DOI 021790 10.1117/1.2890424
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Gain-induced switching in metal-dielectric-metal plasmonic waveguides
Applied Physics Letters
2008; 92 (4)
View details for DOI 041117 10.1063/1.2839324
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GaN-based two-dimensional surface-emitting photonic crystal lasers with AlN/GaN distributed Bragg reflector
Applied Physics Letters
2008; 92 (1)
View details for DOI 011129 10.1063/1.2831716
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Aligning microcavity resonances in silicon photonic-crystal slabs using laser-pumped thermal tuning
Applied Physics Letters
2008; 92 (10)
View details for DOI 103114 10.1063/1.2896615
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One-way electromagnetic waveguide formed at the interface between a plasmonic metal under a static magnetic field and a photonic crystal
Physical Review Letters
2008; 100 (2)
View details for DOI 023902 10.1103/PhysRevLett.100.023902
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Tuning coherent radiative thermal conductance in multilayer photonic crystals
Applied Physics Letters
2008; 92 (10)
View details for DOI 103106 10.1063/1.2890433
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Dispersionless Three-dimensional Metamaterial with a Very High Refractive Index
Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference (CLEO/QELS 2008)
IEEE. 2008: 3131–3132
View details for Web of Science ID 000260498401559
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Stopping and time-reversing a light pulse using dynamic loss-tuning of coupled-resonator delay lines
Conference on Laser Resonators and Beam Control X
SPIE-INT SOC OPTICAL ENGINEERING. 2008
View details for DOI 10.1117/12.773815
View details for Web of Science ID 000255510400011
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Deep-Subwavelength Coaxial Waveguides with a Hollow Core
Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference (CLEO/QELS 2008)
IEEE. 2008: 3567–3568
View details for Web of Science ID 000260498401779
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Tuning Coherent Radiative Thermal Conductance in Multilayer Photonic Crystals
Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference (CLEO/QELS 2008)
IEEE. 2008: 3026–3027
View details for Web of Science ID 000260498401505
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Crosstalk between three-dimensional plasmonic slot waveguides
Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference (CLEO/QELS 2008)
IEEE. 2008: 3571–3572
View details for Web of Science ID 000260498401781
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Strongly correlated multiparticle transport in one dimension through a quantum impurity
PHYSICAL REVIEW A
2007; 76 (6)
View details for DOI 10.1103/PhysRevA.76.062709
View details for Web of Science ID 000251985900067
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Stopping and time reversing a light pulse using dynamic loss tuning of coupled-resonator delay lines
OPTICS LETTERS
2007; 32 (22): 3333-3335
Abstract
We introduce a light-stopping process that uses dynamic loss tuning in coupled-resonator delay lines. We demonstrate via numerical simulations that increasing the loss of selected resonators traps light in a zero group velocity mode concentrated in the low-loss portions of the delay line. The large dynamic range achievable for loss modulation should increase the light-stopping bandwidth relative to previous approaches based on refractive index tuning.
View details for Web of Science ID 000251747600037
View details for PubMedID 18026298
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Enlarging the bandwidth of nanoscale propagating plasmonic modes in deep-subwavelength cylindrical holes
APPLIED PHYSICS LETTERS
2007; 91 (18)
View details for DOI 10.1063/1.2803849
View details for Web of Science ID 000250643600018
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Three-dimensional electromagnetic metamaterials that homogenize to uniform non-Maxwellian media
PHYSICAL REVIEW B
2007; 76 (11)
View details for DOI 10.1103/PhysRevB.76.113101
View details for Web of Science ID 000249786400001
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Modes of subwavelength plasmonic slot waveguides
JOURNAL OF LIGHTWAVE TECHNOLOGY
2007; 25 (9): 2511-2521
View details for DOI 10.1109/JLT.2007.903544
View details for Web of Science ID 000249350000030
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Spatial coherence of the thermal electromagnetic field in the vicinity of a dielectric slab
PHYSICAL REVIEW E
2007; 76 (1)
Abstract
We present the analytic calculation of the cross-spectral density tensor of a thermally radiative planar dielectric slab in extreme near-field, intermediate near-field, and far-field zones. We show that the spatial coherence of the thermal field exhibits distinct features in these zones. At a given wavelength lambda , the coherence length is many orders of magnitude smaller than lambda in the extreme near-field zone, and is roughly lambda/2 in the far-field zone. In the intermediate near-field zone, the coherence length can be much longer than lambda/2 if the loss is small. The physical origin of the short-ranged spatial coherence in the extreme near-field zone is the spatially fluctuating surface charges at the air-dielectric interface. We also demonstrate that in the intermediate near-field zone, the long-ranged spatial coherence is induced by the waveguide modes of the dielectric slab. When the loss is small, the long-ranged coherence falls off approximately as 1/square root x , in contrast to 1/x for a blackbody radiator, where x refers to displacement parallel to the slab surface.
View details for DOI 10.1103/PhysRevE.76.016601
View details for Web of Science ID 000248552600058
View details for PubMedID 17677579
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Polarization controller for hollow-core fiber
OPTICS LETTERS
2007; 32 (11): 1524-1526
Abstract
We demonstrate a universal polarization controller for hollow-core fibers, a simple device consisting of three twisted fiber sections that makes use of the inherent birefringence of the air-core fiber. The device 5% bandwidth at 1550 nm is calculated from measured data to be approximately 13 nm.
View details for Web of Science ID 000247756600060
View details for PubMedID 17546176
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Manipulating light with photonic crystals
7th International Conference on Electrical Transport and Optical Properties of Inhomogeneous Media (ETOPIM-7)
ELSEVIER SCIENCE BV. 2007: 221–28
View details for DOI 10.1016/j.physb.2006.12.078
View details for Web of Science ID 000246642900021
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Enhancing or suppressing self-focusing in nonlinear photonic crystals
APPLIED PHYSICS LETTERS
2007; 90 (16)
View details for DOI 10.1063/1.2724905
View details for Web of Science ID 000245870400024
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Strongly correlated two-photon transport in a one-dimensional waveguide coupled to a two-level system
PHYSICAL REVIEW LETTERS
2007; 98 (15)
Abstract
We show that two-photon transport is strongly correlated in one-dimensional waveguide coupled to a two-level system. The exact S matrix is constructed using a generalized Bethe-ansatz technique. We show that the scattering eigenstates of this system include a two-photon bound state that passes through the two-level system as a composite single particle. Also, the two-level system can induce effective attractive or repulsive interactions in space for photons. This general procedure can be applied to the Anderson model as well.
View details for DOI 10.1103/PhysRevLett.98.153003
View details for Web of Science ID 000245691400023
View details for PubMedID 17501344
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One-way total reflection with one-dimensional magneto-optical photonic crystals
APPLIED PHYSICS LETTERS
2007; 90 (12)
View details for DOI 10.1063/1.2716359
View details for Web of Science ID 000245135800033
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Theoretical investigation of compact couplers between dielectric slab waveguides and two-dimensional metal-dielectric-metal plasmonic waveguides
OPTICS EXPRESS
2007; 15 (3): 1211-1221
Abstract
We theoretically investigate the properties of compact couplers between high-index contrast dielectric slab waveguides and two-dimensional metal-dielectric-metal subwavelength plasmonic waveguides. We show that a coupler created by simply placing a dielectric waveguide terminated flat at the exit end of a plasmonic waveguide can be designed to have a transmission efficiency of ~70% at the optical communication wavelength. We also show that the transmission efficiency of the couplers can be further increased by using optimized multisection tapers. In both cases the transmission response is broadband. In addition, we investigate the properties of a Fabry-Perot structure in which light is coupled in and out of a plasmonic waveguide sandwiched between dielectric waveguides. Finally, we discuss potential fabrication processes for structures that demonstrate the predicted effects.
View details for Web of Science ID 000244682200051
View details for PubMedID 19532350
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Near-complete transmission through subwavelength hole arrays in phonon-polaritonic thin films
PHYSICAL REVIEW B
2007; 75 (7)
View details for DOI 10.1103/PhysRevB.75.075422
View details for Web of Science ID 000244533400108
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Overexpression of NDRG1 is an indicator of poor prognosis in hepatocellular carcinoma
MODERN PATHOLOGY
2007; 20 (1): 76-83
Abstract
Hepatocellular carcinoma is a highly lethal cancer that typically has poor prognosis. Prognostic markers can help in its clinical management and in understanding the biology of poor prognosis. Through an earlier gene expression study, we identified N-Myc downregulated gene 1 (NDRG1) to be significantly highly expressed in hepatocellular carcinoma compared to nontumor liver. As NDRG1 is a differentiation-related gene with putative metastasis suppressor activity, we investigated the clinical significance of its overexpression. Quantitative real-time polymerase chain reaction using an independent set of patient samples confirmed the significant overexpression of NDRG1 in hepatocellular carcinoma compared to nontumor liver samples (P<0.001). Additionally, high levels of NDRG1 transcript correlated with shorter overall survival (P<0.001), late tumor stage (P=0.001), vascular invasion (P=0.003), large tumor size (P=0.011), and high Edmondson-Steiner histological grade (P=0.005). Using immunohistochemistry, NDRG1 protein was found to be significantly overexpressed in hepatocellular carcinoma samples compared to nontumor liver or cirrhotic and benign liver lesions (P<0.001). Among the hepatocellular carcinoma samples, those which are moderately and poorly differentiated express higher levels of NDRG1 protein than those which are well-differentiated (P<0.005). Additionally, hepatocellular carcinomas with vascular invasion also express elevated levels of NDRG1 protein compared to those without vascular invasion (significant at P<0.005). Our results suggest NDRG1 to be a likely tumor marker for hepatocellular carcinoma, the overexpression of which is correlated with tumor differentiation, vascular invasion, and overall survival. Its significantly elevated expression in hepatocellular carcinoma could be a useful indicator of tumor aggressiveness and therefore patient prognosis.
View details for DOI 10.1038/modpathol.3800711
View details for Web of Science ID 000243005000010
View details for PubMedID 17170744
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Three-dimensional electromagnetic metamaterials that homogenize to uniform non-Maxwellian media
Physical Review B
2007; 76 (11)
View details for DOI 113101 10.1103/PhysRevB.76.113101
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The nonlinear effect from the interplay between the nonlinearity and the supercollimation of photonic crystal
Applied Physics Letters
2007; 91 (3)
View details for DOI 031105 10.1063/1.2739413
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Enhancing or suppressing self-focusing in nonlinear photonic crystals
Applied Physics Letters
2007; 90 (16)
View details for DOI 161124 10.1063/1.2724905
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Stopping single photons in one-dimensional circuit quantum electrodynamics systems
Physical Review B
2007; 75 (3)
View details for DOI 035320 10.1103/PhysRevB.75.035320
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Strongly correlated multiparticle transport in one dimension through a quantum impurity
Physical Review A
2007; 76 (6)
View details for DOI 062709 10.1103/PhysRevA.76.062709
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One-way total reflection with one-dimensional magneto-optical photonic crystals
Applied Physics Letters
2007; 90 (12)
View details for DOI 121133 10.1063/1.2716359
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Slow light - Dynamic photon storage
Nature Physics
2007; 3 (6): 372-374
View details for DOI 10.1038/nphys630
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Spatial coherence of the thermal electromagnetic field in the vicinity of a dielectric slab
Physical Review E
2007; 76 (1)
View details for DOI 016601 10.1103/PhysRevE.76.016601
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Modeling nonlinear optical phenomena in nanophotonics
Journal of Lightwave Technology
2007; 25 (9): 2539-2546
View details for DOI 10.1109/jlt.2007.903547
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Enlarging the bandwidth of nanoscale propagating plasmonic modes in deep-subwavelength cylindrical holes
Applied Physics Letters
2007; 91 (18)
View details for DOI 181118 10.1063/1.2803849
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A germanium inverse woodpile structure with a large photonic band gap
Advanced Materials
2007; 19 (12): 1567-+
View details for DOI 10.1002/adma.200602906
-
Near-complete transmission through subwavelength hole arrays in phonon-polaritonic thin films
Physical Review B
2007; 75 (7)
View details for DOI 075422 10.1103/PhysRevB.75.075422
-
Strongly correlated two-photon transport in a one-dimensional waveguide coupled to a two-level system
Physical Review Letters
2007; 98 (15)
View details for DOI 153003 10.1103/PhysRevLett.98.153003
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Compact couplers between dielectric and plasmonic slot waveguides
Conference on Integrated Optics - Devices, Materials, and Technology XI
SPIE-INT SOC OPTICAL ENGINEERING. 2007
View details for DOI 10.1117/12.701562
View details for Web of Science ID 000246061700024
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One-way electromagnetic waveguide
20th Annual Meeting of the IEEE-Lasers-and-Electro-Optics-Society
IEEE. 2007: 278–279
View details for Web of Science ID 000259345200136
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Phonon polariton reflectance spectra in a silicon carbide membrane hole array
20th Annual Meeting of the IEEE-Lasers-and-Electro-Optics-Society
IEEE. 2007: 466–467
View details for Web of Science ID 000259345200232
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Compact couplers between dielectric and metal-dielectric-metal plasmonic waveguides
Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference
IEEE. 2007: 895–896
View details for Web of Science ID 000268751000450
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Stopping single photons in one-dimensional circuit quantum electrodynamics systems
PHYSICAL REVIEW B
2007; 75 (3)
View details for DOI 10.1103/PhysRevB.75.035320
View details for Web of Science ID 000243895400102
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Optical Characterization and Sensitivity Evaluation of Guided-Resonances in Photonic Crystal Slabs for Biosensing Applications
Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference
IEEE. 2007: 993–994
View details for Web of Science ID 000268751000499
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Sensitivity analysis of a photonic crystal structure for index-of-refraction sensing
Conference on Nanoscale Imaging, Spectroscopy, Sensing, and Actuation for Biomedical Applications IV
SPIE-INT SOC OPTICAL ENGINEERING. 2007
View details for DOI 10.1117/12.705670
View details for Web of Science ID 000245976200016
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Design of mid-infrared photodetectors enhanced by surface plasmons on grating structures
Conference on Integrated Optics - Devices, Materials, and Technology XI
SPIE-INT SOC OPTICAL ENGINEERING. 2007
View details for DOI 10.1117/12.698016
View details for Web of Science ID 000246061700022
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Transmission enhancement and suppression by subwavelength hole arrays in polaritonic films
Conference on Photonic Crystal Materials and Devices VI
SPIE-INT SOC OPTICAL ENGINEERING. 2007
View details for DOI 10.1117/12.702917
View details for Web of Science ID 000246368900003
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One-way waveguide and strong photon-photon interaction in nanophotonic structures
IEEE/LEOS International Conference on Optical MEMS and Nanophotonics
IEEE. 2007: 181–182
View details for Web of Science ID 000251224200088
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Coherent few-photon quantum transport in one-dimensional systems
Conference on Advanced Optical and Quantum Memories and Computing IV
SPIE-INT SOC OPTICAL ENGINEERING. 2007
View details for DOI 10.1117/12.716467
View details for Web of Science ID 000246396000016
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Radiation loss of coupled-resonator waveguides in photonic-crystal slabs
Conference on Photonic Crystal Materials and Devices VI
SPIE-INT SOC OPTICAL ENGINEERING. 2007
View details for DOI 10.1117/12.704597
View details for Web of Science ID 000246368900014
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Extraordinary transmission through a poly-SiC membrane with subwavelength hole arrays
IEEE/LEOS International Conference on Optical MEMS and Nanophotonics
IEEE. 2007: 157–158
View details for Web of Science ID 000251224200077
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New properties of light in metamaterials
Conference on Metamaterials II
SPIE-INT SOC OPTICAL ENGINEERING. 2007
View details for DOI 10.1117/12.724178
View details for Web of Science ID 000250370100006
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Dynamically-tuned microresonator complexes
Conference on Laser Resonators and Beam Control IX
SPIE-INT SOC OPTICAL ENGINEERING. 2007
View details for DOI 10.1117/12.714597
View details for Web of Science ID 000245978400002
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Enhanced second-harmonic generation in AlGaAs/AlxOy tightly confining waveguides and resonant cavities
OPTICS LETTERS
2006; 31 (24): 3626-3628
Abstract
We demonstrate second-harmonic generation (SHG) from sub-micrometer-sized AlGaAs/AlxOy artificially birefringent waveguides. The normalized conversion efficiency is the highest ever reported. We further enhanced the SHG using a waveguide-embedded cavity formed by dichroic mirrors. Resonant enhancements as high as approximately 10x were observed. Such devices could be potentially used as highly efficient, ultracompact frequency converters in integrated photonic circuits.
View details for Web of Science ID 000242560400022
View details for PubMedID 17130925
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Advances in theory of photonic crystals
JOURNAL OF LIGHTWAVE TECHNOLOGY
2006; 24 (12): 4493-4501
View details for DOI 10.1109/JLT.2006.886061
View details for Web of Science ID 000243888600005
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Dichroic mirror embedded in a submicrometer waveguide for enhanced resonant nonlinear optical devices
OPTICS LETTERS
2006; 31 (22): 3285-3287
Abstract
We report the design, fabrication and characterization of novel dichroic mirrors embedded in a tightly confining AlGaAs/Al(x)O(y) waveguide. Reflection at the first-harmonic wavelength as high as 93% is achieved, while high transmission is maintained at the second-harmonic wavelength. The measured cavity spectrum is in excellent agreement with finite-difference time-domain simulations. Such a mirror is essential for achieving resonant enhancement of second-harmonic generation.
View details for Web of Science ID 000241799700022
View details for PubMedID 17072398
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Radiation loss of coupled-resonator waveguides in photonic-crystal slabs
APPLIED PHYSICS LETTERS
2006; 89 (19)
View details for DOI 10.1063/1.2387131
View details for Web of Science ID 000241960400014
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Cut-through metal slit array as an anisotropic metamaterial film
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
2006; 12 (6): 1116-1122
View details for DOI 10.1109/JSTQE.2006.879577
View details for Web of Science ID 000243013600007
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Conditions for designing single-mode air-core waveguides in three-dimensional photonic crystals
APPLIED PHYSICS LETTERS
2006; 89 (16)
View details for DOI 10.1063/1.2362983
View details for Web of Science ID 000241405200003
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Design of midinfrared photodetectors enhanced by surface plasmons on grating structures
APPLIED PHYSICS LETTERS
2006; 89 (15)
View details for DOI 10.1063/1.2360896
View details for Web of Science ID 000241247900016
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All-angle negative refraction and evanescent wave amplification using one-dimensional metallodielectric photonic crystals
APPLIED PHYSICS LETTERS
2006; 89 (15)
View details for DOI 10.1063/1.2360187
View details for Web of Science ID 000241247900002
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Suppressing the effect of disorders using time-reversal symmetry breaking in magneto-optical photonic crystals: An illustration with a four-port circulator
PHOTONICS AND NANOSTRUCTURES-FUNDAMENTALS AND APPLICATIONS
2006; 4 (3): 132-140
View details for DOI 10.1016/j.photonics.2006.02.001
View details for Web of Science ID 000240118800002
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Dynamically tuned coupled-resonator delay lines can be nearly dispersion free
OPTICS LETTERS
2006; 31 (13): 1985-1987
Abstract
We investigate dispersion effects in dynamically tuned, coupled-resonator delay lines. Provided that the system is tuned to a zero-bandwidth state, a signal can be delayed indefinitely with almost no dispersion. We present a theoretical analysis of such a light-stopping system and verify the results using numerical simulations.
View details for Web of Science ID 000238494600015
View details for PubMedID 16770407
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Anomalous modal structure in a waveguide with a photonic crystal core
OPTICS LETTERS
2006; 31 (6): 742-744
Abstract
We analyze a dielectric waveguide with a photonic crystal core. Using constant frequency contour analysis, we show that the modal behavior of this structure is drastically different from that of a conventional slab waveguide. In particular, at a given frequency the lowest-order guided mode can have an odd symmetry or can have more than one nodal plane in its field distribution. Also, there exist several single-mode regions with a different modal profile in each region. Finally, a single-mode waveguide for the fundamental mode with a large core and strong confinement can be realized. All these behaviors are confirmed by our three-dimensional finite-difference time-domain simulations.
View details for Web of Science ID 000235833400022
View details for PubMedID 16544609
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Systematic photonic crystal device design: Global and local optimization and sensitivity analysis
IEEE JOURNAL OF QUANTUM ELECTRONICS
2006; 42 (3-4): 266-279
View details for DOI 10.1109/JQE.2005.862038
View details for Web of Science ID 000236674000006
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Model dispersive media in finite-difference time-domain method with complex-conjugate pole-residue pairs
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
2006; 16 (3): 119-121
View details for DOI 10.1109/LMWC.2006.869862
View details for Web of Science ID 000236124400007
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All-angle negative refraction for surface plasmon waves using a metal-dielectric-metal structure
PHYSICAL REVIEW LETTERS
2006; 96 (7)
Abstract
We show that a metal-dielectric-metal structure can function as a negative refraction lens for surface plasmon waves on a metal surface. The structure is uniform with respect to a plane of incidence and operates at the optical frequency range. Using three-dimensional finite-difference time-domain simulations, we demonstrate the imaging operation of the structure with realistic material parameters including dispersions and losses. Our design should facilitate the demonstration of many novel effects associated with negative refraction on chip at optical wavelength ranges. In addition, this structure provides a new way of controlling the propagation of surface plasmons, which are important for nanoscale manipulation of optical waves.
View details for DOI 10.1103/PhysRevLett.96.073907
View details for Web of Science ID 000235554100034
View details for PubMedID 16606095
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Photonic crystals for communications: Stopping light and miniaturized non-reciprocal devices
Conference on Optical Fiber Communications/National Fiber Optic Engineers Conference
OPTICAL SOC AMERICA. 2006: 2119–2121
View details for Web of Science ID 000259602601156
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Direct-write assembly of three-dimensional photonic crystals: Conversion of polymer scaffolds to silicon hollow-woodpile structures
Advanced Materials
2006; 18 (4): 461-+
View details for DOI 10.1002/adma.200501447
-
Radiation loss of coupled-resonator waveguides in photonic-crystal slabs
Applied Physics Letters
2006; 89 (19)
View details for DOI 191114 10.1063/1.2387131
-
All-angle negative refraction for surface plasmon waves using a metal-dielectric-metal structure
Physical Review Letters
2006; 96 (7)
View details for DOI 073907 10.1103/PhysRevLett.96.073907
-
Design of midinfrared photodetectors enhanced by surface plasmons on grating structures
Applied Physics Letters
2006; 89 (15)
View details for DOI 151116 10.1063/1.2360896
-
Cut-through metal slit array as an anisotropic metamaterial film
Ieee Journal of Selected Topics in Quantum Electronics
2006; 12 (6)
View details for DOI 10.1109/jstqe.2006.879577
-
Conditions for designing single-mode air-core waveguides in three-dimensional photonic crystals
Applied Physics Letters
2006; 89 (16)
View details for DOI 161103 10.1063/1.2362983
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Waveguides in inverted opal photonic crystals
Optics Express
2006; 14 (2): 866-878
View details for DOI 10.1364/opex.14.000866
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Guided modes supported by plasmonic films with a periodic arrangement of subwavelength slits
Applied Physics Letters
2006; 88 (3)
View details for DOI 031101 10.1063/1.2164905
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Air-bridged photonic crystal slabs at visible and near-infrared wavelengths
Physical Review B
2006; 73 (11)
View details for DOI 115126 10.1103/PhysRevB.73.115126
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Experimental realization of an on-chip all-optical analogue to electromagnetically induced transparency
Physical Review Letters
2006; 96 (12)
View details for DOI 123901 10.1103/PhysRevLett.96.123901
-
All-angle negative refraction and evanescent wave amplification using one-dimensional metallodielectric photonic crystals
Applied Physics Letters
2006; 89 (15)
View details for DOI 151102 10.1063/1.2360187
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A polarization controller for air-core photonic-bandgap fiber
Conference on Optical Fiber Communications/National Fiber Optic Engineers Conference
OPTICAL SOC AMERICA. 2006: 681–683
View details for Web of Science ID 000259602600200
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Dynamically-tuned coupled-resonator delay lines can be nearly dispersion free
Conference on Advanced Optical and Quantum Memories and Computing III
SPIE-INT SOC OPTICAL ENGINEERING. 2006
View details for Web of Science ID 000237288300001
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Controlling diffraction and waveguide modes by exploiting spatial dispersions in photonic crystals
Conference on Photonic Crystal Materials and Devices IV
SPIE-INT SOC OPTICAL ENGINEERING. 2006
View details for DOI 10.1117/12.649564
View details for Web of Science ID 000238247900025
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Magneto-optical circulator in two-dimensional photonic crystals
Conference on Photonic Crystal Materials and Devices IV
SPIE-INT SOC OPTICAL ENGINEERING. 2006
View details for DOI 10.1117/12.646874
View details for Web of Science ID 000238247900009
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Integrated biomedical nanosensor using guided resonance in photonic crystal structures
Conference on Nanobiophotonics and Biomedical Applications III
SPIE-INT SOC OPTICAL ENGINEERING. 2006
View details for DOI 10.1117/12.647312
View details for Web of Science ID 000237699500014
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Guided subwavelength plasmonic mode supported by a slot in a thin metal film
OPTICS LETTERS
2005; 30 (24): 3359-3361
Abstract
We demonstrate the existence of a bound optical mode supported by a slot in a thin metallic film deposited on a substrate, with slot dimensions much smaller than the wavelength. The modal size is almost completely dominated by the near field of the slot. Consequently, the size is very small compared with the wavelength, even when the dispersion relation of the mode approaches the light line of the surrounding media. In addition, the group velocity of this mode is close to the speed of light in the substrate, and its propagation length is tens of micrometers at the optical communication wavelength.
View details for Web of Science ID 000233827000033
View details for PubMedID 16389831
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Understanding air-core photonic-bandgap fibers: Analogy to conventional fibers
JOURNAL OF LIGHTWAVE TECHNOLOGY
2005; 23 (12): 4169-4177
View details for DOI 10.1109/JLT.2005.859406
View details for Web of Science ID 000234417100022
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Coherent single photon transport in a one-dimensional waveguide coupled with superconducting quantum bits
PHYSICAL REVIEW LETTERS
2005; 95 (21)
Abstract
A recent theoretical analysis and experimental results show that interesting transport properties of a single microwave photon emerge when a quantum bit in a cavity is coupled to a one-dimensional waveguide. Here we adopt a real-space model Hamiltonian to give a unified approach which accounts for the experimental results, and make new predictions on the properties of single photon transport, such as the general Fano line shape, symmetric vacuum Rabi splitting for a leaky cavity at resonance, and a one-photon switching capability.
View details for DOI 10.1103/PhysRevLett.95.213001
View details for Web of Science ID 000233362100018
View details for PubMedID 16384136
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Propagating modes in subwavelength cylindrical holes
49th International Conference on Electron, Ion, and Photon Beam Technology and Nanofabrication
A V S AMER INST PHYSICS. 2005: 2675–78
View details for DOI 10.1116/1.2130344
View details for Web of Science ID 000234613200077
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Conditions for self-collimation in three-dimensional photonic crystals
OPTICS LETTERS
2005; 30 (18): 2397-2399
Abstract
We introduce the theoretical criterion for achieving three-dimensional self-collimation of light in a photonic crystal. Based on this criterion, we numerically demonstrate a body-center-cubic structure that supports wide-angle self-collimation and is directly compatible with the recently developed holographic fabrication technique. We further show that both bends and beam splitters can be introduced into this structure by the use of interfaces.
View details for Web of Science ID 000231964600017
View details for PubMedID 16196331
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Wannier basis design and optimization of a photonic crystal waveguide crossing
IEEE PHOTONICS TECHNOLOGY LETTERS
2005; 17 (9): 1875-1877
View details for DOI 10.1109/LPT.2005.852326
View details for Web of Science ID 000231453500038
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Coherent photon transport from spontaneous emission in one-dimensional waveguides
OPTICS LETTERS
2005; 30 (15): 2001-2003
Abstract
A two-level system coupled to a one-dimensional continuum is investigated. By using a real-space model Hamiltonian, we show that spontaneous emission can coherently interfere with the continuum modes and gives interesting transport properties. The technique is applied to various related problems with different configurations, and analytical solutions are given.
View details for Web of Science ID 000230714400029
View details for PubMedID 16092246
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Optical circulators in two-dimensional magneto-optical photonic crystals
OPTICS LETTERS
2005; 30 (15): 1989-1991
Abstract
We propose an optical circulator formed of a magneto-optical cavity in a 2D photonic crystal. With spatially engineered magnetic domain structures, the cavity can be designed to support a pair of counterrotating states at different frequencies. By coupling the cavity to three waveguides, and by proper matching of the frequency split of the cavity modes with the coupling strength between the cavity and the waveguide, ideal three-port circulators with complete isolation and transmission can be created. We present a guideline for domain design needed to maximize the modal coupling and the operational bandwidth for any given magneto-optical constant.
View details for Web of Science ID 000230714400025
View details for PubMedID 16092242
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Mode-locking of monolithic laser diodes incorporating coupled-resonator optical waveguides
OPTICS EXPRESS
2005; 13 (12): 4539-4553
Abstract
We investigate the operational principle of mode-locking in monolithic semiconductor lasers incorporating coupled-resonator optical waveguides. The size of mode-locked lasers operating at tens of GHz repetition frequencies can be drastically reduced owing to the significantly decreased group velocity of light. The dynamics of such devices are analyzed numerically based on a coupled-oscillator model with the gain, loss, spontaneous emission, nearest-neighbor coupling and amplitude phase coupling (as described by the linewidth enhancement factor alpha) taken into account. It is demonstrated that active mode-locking can be achieved for moderate alpha parameter values. Simulations also indicate that large alpha parameters may destabilize the mode-locking behavior and result in irregular pulsations, which nevertheless can be effectively suppressed by incorporating detuning of individual cavity resonant frequencies in the device design.
View details for Web of Science ID 000229799200018
View details for PubMedID 19495368
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Mechanism for designing metallic metamaterials with a high index of refraction
PHYSICAL REVIEW LETTERS
2005; 94 (19)
Abstract
We introduce a mechanism for creating artificial high refractive index metamaterials by exploiting the existence of subwavelength propagating modes in metallic systems. As an example, we investigate analytically and numerically metal films with a periodic arrangement of cut-through slits. Because of the presence of TEM modes in the slits, for TM polarization such a system can be rigorously mapped into a high refractive index dielectric slab when the features are smaller than the wavelength of light. The effective refractive index is entirely controlled by the geometry of the metal films, is positive, frequency independent, and can be made arbitrarily large.
View details for DOI 10.1103/PhysRevLett.94.197401
View details for Web of Science ID 000229277000055
View details for PubMedID 16090208
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Photonic crystal device sensitivity analysis with Wannier basis gradients
OPTICS LETTERS
2005; 30 (3): 302-304
Abstract
We present a powerful sensitivity analysis method for devices in a photonic crystal. The method is based on a Wannier basis field expansion and efficient matrix analysis techniques for finding eigenvalue and transmission gradients with respect to the perturbation. The method permits fast analysis of a large number of dielectric perturbation situations for multiple devices in a photonic crystal. We verify the method with finite-difference time-domain and plane-wave expansion calculations.
View details for Web of Science ID 000226678300028
View details for PubMedID 15751892
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Demonstration of systematic photonic crystal device design and optimization by low-rank adjustments: an extremely compact mode separator
OPTICS LETTERS
2005; 30 (2): 141-143
Abstract
We present a powerful design and optimization method for devices in a photonic crystal. The method is based on a Wannier basis field expansion and efficient matrix analysis techniques for searching through a vast number of designs. The method permits the design of many compact optical devices with complex and novel functions. We present a design example of a very compact mode separator that is 8.2 microm x 13.3 microm in size that demultiplexes the three modes of an input photonic crystal multimode waveguide into three single-mode output waveguides. We verify the method with finite-difference time-domain calculations.
View details for Web of Science ID 000226218500009
View details for PubMedID 15675693
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Principal modes in multimode waveguides
OPTICS LETTERS
2005; 30 (2): 135-137
Abstract
We generalize the concept of principal states of polarization and prove the existence of principal modes in multimode waveguides. Principal modes do not suffer from modal dispersion to first order of frequency variation and form orthogonal bases at both the input and the output ends of the waveguide. We show that principal modes are generally different from eigenmodes, even in uniform waveguides, unlike the special case of a single-mode fiber with uniform birefringence. The difference is most pronounced when different eigenmodes possess similar group velocities and when their field patterns vary as a function of frequency. This work may provide a new basis for analysis and control of dispersion in multimode fiber systems.
View details for Web of Science ID 000226218500007
View details for PubMedID 15675691
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Magneto-optical defects in two-dimensional photonic crystals
Applied Physics B-Lasers and Optics
2005; 81 (2-3): 369-375
View details for DOI 10.1007/s00340-005-1846-x
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Mechanism for designing metallic metamaterials with a high index of refraction
Physical Review Letters
2005; 94 (19)
View details for DOI 197401 10.1103/PhysRevLett.94.197401
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Effect of the plasmonic dispersion relation on the transmission properties of subwavelength cylindrical holes
Physical Review B
2005; 72 (8)
View details for DOI 085436 10.1103/PhysRevB.72.085436
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Displacement sensing using evanescent tunneling between guided resonances in photonic crystal slabs
Journal of Applied Physics
2005; 98 (3)
View details for DOI 033102 10.1063/1.1999031
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Tunable terahertz Bloch oscillations in chirped photonic crystals
Physical Review B
2005; 72 (7)
View details for DOI 075119 10.1103/PhysRevB.72.075119
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Dynamic photonic structures: Stopping, storage, and time reversal of light
Studies in Applied Mathematics
2005; 115 (2): 233-253
View details for DOI 10.1111/j.1467-9590.2005.00327.x
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Coupled optical and electronic simulations of electrically pumped photonic-crystal-based light-emitting diodes
Journal of Applied Physics
2005; 97 (4)
View details for DOI 044503 10.1063/1.1848194
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Coherent single photon transport in a one-dimensional waveguide coupled with superconducting quantum bits
Physical Review Letters
2005; 95 (21)
View details for DOI 213001 10.1103/PhysRevLett.95.213001
-
Bends and splitters in metal-dielectric-metal subwavelength plasmonic waveguides
Applied Physics Letters
2005; 87 (13)
View details for DOI 131102 10.1063/1.2056594
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Stopping and storing light coherently
Physical Review A
2005; 71 (1)
View details for DOI 013803 10.1103/PhysRevA.71.013803
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Metallic photonic crystals with strong broadband absorption at optical frequencies over wide angular range
Journal of Applied Physics
2005; 97 (9)
View details for DOI 093104 10.1063/1.1889248
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Stopping light in a waveguide with an all-optical analog of electromagnetically induced transparency
PHYSICAL REVIEW LETTERS
2004; 93 (23)
Abstract
We introduce a new all-optical mechanism that can compress the bandwidth of light pulses to absolute zero, and bring them to a complete stop. The mechanism can be realized in a system consisting of a waveguide side coupled to tunable resonators, which generates a photonic band structure that represents a classical analogue of the electromagnetically induced transparency. The same system can also achieve a time-reversal operation. We demonstrate the operation of such a system by finite-difference time-domain simulations of an implementation in photonic crystals.
View details for DOI 10.1103/PhysRevLett.93.233903
View details for Web of Science ID 000225508000035
View details for PubMedID 15601162
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Photonic crystal slabs demonstrating strong broadband suppression of transmission in the presence of disorders
OPTICS LETTERS
2004; 29 (23): 2782-2784
Abstract
We characterize the transmission spectra of out-of-plane, normal-incidence light of two-dimensional silicon photonic crystal slabs and observe excellent agreement between the measured data and finite-difference time-domain simulations over the 1050-1600-nm wavelength range. Crystals that are 340 nm thick and have holes of 330-nm radius on a square lattice of 998-nm pitch show 20-dB extinction in transmission from 1220 to 1255 nm. Increasing the hole radius to 450 nm broadens the extinction band further, and we obtain >85% extinction from 1310 to 1550 nm. Discrepancies between simulation and measurement are ascribed to disorder in the photonic lattice, which is measured through image processing on high-resolution scanning electron micrographs. Analysis of crystal imperfections indicates that they tend to average out narrowband spectral features, while having relatively small effects on broadband features.
View details for Web of Science ID 000225280700028
View details for PubMedID 15605504
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Anomalous reflections at photonic crystal surfaces
PHYSICAL REVIEW E
2004; 70 (5)
Abstract
We explore the reflection phenomena when a light beam propagating in a photonic crystal is incident upon the interfaces between the crystal and a uniform dielectric. We prove that a generalized wave-vector conservation relation still applies even when the interface is not aligned with special crystal directions. Using this conservation relation, we show that neither the phase velocity nor the group velocity directions of the reflected beam satisfies Snell's law. Rather, the system exhibits remarkable and unusual reflection effects. In particular, total internal reflection is absent except at discrete angular values. The direction of the reflected beam can also be pinned along special crystal directions, independent of the orientation of the interface. And finally, at glancing incidences, strong backward reflections may occur. These effects may be important for creating integrated photonic circuits, and for on-chip image transfer.
View details for DOI 10.1103/PhysRevE.70.055601
View details for Web of Science ID 000225970700010
View details for PubMedID 15600683
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Time reversal of light with linear optics and modulators
PHYSICAL REVIEW LETTERS
2004; 93 (17)
Abstract
We introduce a new physical process that can perform a complete time-reversal operation on any electromagnetic pulse. The process uses only small refractive index modulations of linear optical elements. No nonlinear multiphoton effects such as four-wave mixing are required. The introduced process can be implemented on chip with standard semiconductor materials. Furthermore, the same process can be used to compress or expand the spectrum of electromagnetic waves while completely preserving the coherent information. We exhibit the time-reversal process by first-principles simulations of microcavity complexes in photonic crystals.
View details for DOI 10.1103/PhysRevLett.93.173903
View details for Web of Science ID 000224662700030
View details for PubMedID 15525079
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Method for sensitivity analysis of photonic crystal devices
OPTICS LETTERS
2004; 29 (19): 2288-2290
Abstract
We present a new method for sensitivity analysis of photonic crystal devices. The algorithm is based on a finite-difference frequency-domain model and uses the adjoint variable method and perturbation theory techniques. We show that our method is highly efficient and accurate and can be applied to calculation of the sensitivity of transmission parameters of resonant nanophotonic devices.
View details for Web of Science ID 000224193500026
View details for PubMedID 15524383
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Submicrometer all-optical digital memory and integration of nanoscale photonic devices without isolators
JOURNAL OF LIGHTWAVE TECHNOLOGY
2004; 22 (10): 2316-2322
View details for DOI 10.1109/JLT.2004.833811
View details for Web of Science ID 000224492700012
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Designing for beam propagation in periodic and nonperiodic photonic nanostructures: Extended Hamiltonian method
PHYSICAL REVIEW E
2004; 70 (3)
Abstract
We use Hamiltonian optics to design and analyze beam propagation in two-dimensional (2D) periodic structures with slowly varying nonuniformities. We extend a conventional Hamiltonian method, adding equations for calculating the width of a beam propagating in such structures, and quantify the range of validity of the extended Hamiltonian equations. For calculating the beam width, the equations are more than 10(3) times faster than finite difference time domain (FDTD) simulations. We perform FDTD simulations of beam propagation in large 2D periodic structures with slowly varying nonuniformities to validate our method. Beam path and beam width calculated using the extended Hamiltonian method show good agreement with FDTD simulations. By contrasting the method with ray tracing of the bundle of rays, we highlight and explain the limitations of the extended Hamiltonian method. Finally, we use a frequency demultiplexing device optimization example to demonstrate the potential applications of the method.
View details for DOI 10.1103/PhysRevE.70.036612
View details for Web of Science ID 000224302300097
View details for PubMedID 15524661
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Simulations of the effect of the core ring on surface and air-core modes in photonic bandgap fibers
OPTICS EXPRESS
2004; 12 (15): 3436-3442
Abstract
We show through computer simulations that the thin silica ring that surrounds the air core of a photonic-bandgap fiber introduces surface modes. The intensity profile and dispersion of these modes indicate that they are the modes of the waveguide formed by the ring surrounded by air on one side and the photonic crystal cladding on the other. The ring also induces small perturbations of the fundamental core mode. Coupling to those surface modes, which have propagation constants close to that of the core mode, are likely to induce substantial loss to the core mode. By reducing the thickness of the ring and/or by suitably selecting its radius the propagation constants of the surface modes can be moved farther from that of the core mode and the loss reduced.
View details for Web of Science ID 000222908900016
View details for PubMedID 19483869
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Design of polarization beam splitter in two-dimensional triangular photonic crystals
CHINESE PHYSICS LETTERS
2004; 21 (7): 1285-1288
View details for Web of Science ID 000222542100028
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Omnidirectional resonance in a metal-dielectric-metal geometry
APPLIED PHYSICS LETTERS
2004; 84 (22): 4421-4423
View details for DOI 10.1063/1.1758306
View details for Web of Science ID 000221537500021
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Simple geometric criterion to predict the existence of surface modes in air-core photonic-bandgap fibers
OPTICS EXPRESS
2004; 12 (9): 1864-1872
Abstract
We propose a simple geometric criterion based on the size of the core relative to the photonic crystal to quickly determine whether an air-core photonic-bandgap fiber with a given geometry supports surface modes. Comparison to computer simulations show that when applied to fibers with a triangular-pattern cladding and a circular air core, this criterion accurately predicts the existence of a finite number of discrete ranges of core radii that support no surface modes. This valuable tool obviates the need for time-consuming and costly simulations, and it can be easily applied to fibers with an arbitrary photonic-crystal structure and core profile.
View details for Web of Science ID 000221423300011
View details for PubMedID 19475017
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One-mode model for patterned metal layers inside integrated color pixels
OPTICS LETTERS
2004; 29 (9): 974-976
Abstract
Optimized design of the optical filters inside integrated color pixels (ICPs) for complementary metal-oxide semiconductor image sensors requires analytical models. ICP optical filters consist of subwavelength patterned metal layers. We show that a one-mode model, in which subwavelength gaps in the metal layer are described in terms of single-mode waveguides, suffices to predict the salient features of measured ICP wavelength selectivity. The Airy-like transmittance formula, derived for transverse-electric polarization, predicts an angle-independent cutoff wavelength, which is in good agreement with predictions made with a two-dimensional finite-difference time-domain method.
View details for Web of Science ID 000221016200020
View details for PubMedID 15143645
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Designing air-core photonic-bandgap fibers free of surface modes
IEEE JOURNAL OF QUANTUM ELECTRONICS
2004; 40 (5): 551-556
View details for DOI 10.1109/JQE.2004.826429
View details for Web of Science ID 000221090900015
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Extracting light from polymer light-emitting diodes using stamped Bragg gratings
ADVANCED FUNCTIONAL MATERIALS
2004; 14 (5): 451-456
View details for DOI 10.1002/adfm.200305070
View details for Web of Science ID 000221707700006
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Angular and polarization properties of a photonic crystal slab mirror
LEOS Topical Meeting on Photonic Crystals and Holey Fibers
OPTICAL SOC AMER. 2004: 1575–82
Abstract
It was recently demonstrated that a photonic crystal slab can function as a mirror for externally incident light along a normal direction with near-complete reflectivity over a broad wavelength range. We analyze the angular and polarization properties of such photonic crystal slab mirror, and show such reflectivity occurs over a sizable angular range for both polarizations. We also show that such mirror can be designed to reflect one polarization completely, while allowing 100% transmission for the other polarization, thus behaving as a polarization splitter with a complete contrast. The theoretical analysis is validated by comparing with experimental measurements.
View details for Web of Science ID 000220908100012
View details for PubMedID 19474983
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Stopping light all optically
PHYSICAL REVIEW LETTERS
2004; 92 (8)
Abstract
We show that light pulses can be stopped and stored coherently, with an all-optical adiabatic and reversible pulse bandwidth compression process. Such a process overcomes the fundamental bandwidth-delay constraint in optics and can generate arbitrarily small group velocities for any light pulse with a given bandwidth, without any coherent or resonant light-matter interactions. We exhibit this process in optical resonators, where the bandwidth compression is accomplished only by small refractive-index modulations performed at moderate speeds.
View details for DOI 10.1103/PhysRevLett.92.083901
View details for Web of Science ID 000189266100013
View details for PubMedID 14995773
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Time reversal of light with linear optics and modulators
Physical Review Letters
2004; 93 (17)
View details for DOI 173903 10.1103/PhysRevLett.93.173903
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Temporal coupled-mode theory and the presence of non-orthogonal modes in lossless multimode cavities
Ieee Journal of Quantum Electronics
2004; 40 (10): 1511-1518
View details for DOI 10.1109/jqe.2004.834773
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Field expulsion and reconfiguration in polaritonic photonic crystals (vol 90, art no 196402, 2003)
Physical Review Letters
2004; 92 (16)
View details for DOI 169901 10.1103/PhysRevLett.92.169901
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Stopping light all optically
Physical Review Letters
2004; 92 (8)
View details for DOI 083901 10.1103/PhysRevLett.92.083901
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Nature of lossy Bloch states in polaritonic photonic crystals
Physical Review B
2004; 69 (19)
View details for DOI 195111 10.1103/PhysRevB.69.195111
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Designing for beam propagation in periodic and nonperiodic photonic nanostructures: Extended Hamiltonian method
Physical Review E
2004; 70 (3)
View details for DOI 036612 10.1103/PhysRevE.70.036612
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Stopping light in a waveguide with an all-optical analog of electromagnetically induced transparency
Physical Review Letters
2004; 93 (23)
View details for DOI 233903 10.1103/PhysRevLett.93.233903
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Phonon-polariton excitations in photonic crystals (vol 68, art no 075209, 2003)
Physical Review B
2004; 69 (15)
View details for DOI 159903 10.1103/PhysRevB.69.159903
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Anomalous reflections at photonic crystal surfaces
Physical Review E
2004; 70 (5)
View details for DOI 055601 10.1103/PhysRevE.70.055601
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All-pass transmission or flattop reflection filters using a single photonic crystal slab
Applied Physics Letter
2004; 84 (24): 4905-4907
View details for DOI 10.1063/1.1763221
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All-optical transistor action with bistable switching in a photonic crystal cross-waveguide geometry
OPTICS LETTERS
2003; 28 (24): 2506-2508
Abstract
We demonstrate all-optical switching action in a nonlinear photonic crystal cross-waveguide geometry with instantaneous Kerr nonlinearity, in which the transmission of a signal can be reversibly switched on and off by a control input. Our geometry accomplishes both spatial and spectral separation between the signal and the control in the nonlinear regime. The device occupies a small footprint of a few micrometers squared and requires only a few milliwatts of power at a 10-Gbit/s switching rate by use of Kerr nonlinearity in AlGaAs below half the electronic bandgap. We also show that the switching dynamics, as revealed by both coupled-mode theory and finite-difference time domain simulations, exhibits collective behavior that can be exploited to generate high-contrast logic levels and all-optical memory.
View details for Web of Science ID 000187075300024
View details for PubMedID 14690129
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Compact all-pass filters in photonic crystals as the building block for high-capacity optical delay lines
PHYSICAL REVIEW E
2003; 68 (6)
Abstract
Optical all-pass filters, which generate strong on-resonance optical delay while maintaining a unity transmission coefficient throughout the entire resonant bandwidth, are of great importance for constructing delay lines in optical buffer applications. We provide an analysis of optical delay lines based upon cascading multiple stages of all-pass filter structures. We show that the maximum capacity of such delay lines is determined primarily by the dimensions of each stage. Motivated by this analysis, we describe compact optical all-pass filters in two-dimensional photonic crystals. The accidental degeneracy of the cavity modes introduces a strong group delay and dispersion while maintaining total transmission.
View details for DOI 10.1103/PhysRevE.68.066616
View details for Web of Science ID 000188316700098
View details for PubMedID 14754345
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Mechanically switchable photonic crystal filter with either all-pass transmission or flat-top reflection characteristics
OPTICS LETTERS
2003; 28 (19): 1763-1765
Abstract
We theoretically introduce a new type of optical all-pass filter based on guided resonance in coupled photonic crystal slabs. The filter exhibits near-complete transmission for both on- and off-resonant frequencies and yet generates large resonant group delay. We further show that such a filter can be mechanically switched into a flat-top band rejection filter.
View details for Web of Science ID 000185436500011
View details for PubMedID 14514093
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Displacement-sensitive photonic crystal structures based on guided resonance in photonic crystal slabs
APPLIED PHYSICS LETTERS
2003; 82 (13): 1999-2001
View details for DOI 10.1063/1.1563739
View details for Web of Science ID 000181801100001
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Temporal coupled-mode theory for the Fano resonance in optical resonators
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION
2003; 20 (3): 569-572
Abstract
We present a theory of the Fano resonance for optical resonators, based on a temporal coupled-mode formalism. This theory is applicable to the general scheme of a single optical resonance coupled with multiple input and output ports. We show that the coupling constants in such a theory are strongly constrained by energy-conservation and time-reversal symmetry considerations. In particular, for a two-port symmetric structure, Fano-resonant line shape can be derived by using only these symmetry considerations. We validate the analysis by comparing the theoretical predictions with three-dimensional finite-difference time-domain simulations of guided resonance in photonic crystal slabs. Such a theory may prove to be useful for response-function synthesis in filter and sensor applications.
View details for Web of Science ID 000181226100018
View details for PubMedID 12630843
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Bends and splitters for self-collimated beams in photonic crystals
Applied Physics Letters
2003; 83 (16): 3251-3253
View details for DOI 10.1063/1.1621736
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High-contrast all-optical bistable switching in photonic crystal microcavities
Applied Physics Letters
2003; 83 (14): 2739-2741
View details for DOI 10.1063/1.1615835
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Phonon-polariton excitations in photonic crystals
Physical Review B
2003; 68 (7)
View details for DOI 075209 10.1103/PhysRevB.68.075209
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Compact all-pass filters in photonic crystals as the building block for high-capacity optical delay lines
Physical Review E
2003; 68 (6)
View details for DOI 066616 10.1103/PhysRevE.68.066616
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Field expulsion and reconfiguration in polaritonic photonic crystals
Physical Review Letters
2003; 90 (19)
View details for DOI 196402 10.1103/PhysRevLett.90.196402
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Reflectionless multichannel wavelength demultiplexer in a transmission resonator configuration
IEEE JOURNAL OF QUANTUM ELECTRONICS
2003; 39 (1): 160-165
View details for DOI 10.1109/JQE.2002.806188
View details for Web of Science ID 000180232100020
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Design of a nanoelectromechanical high-index-contrast guided-wave optical switch for single-mode operation at 1.55 mu m
Ieee Photonics Technology Letters
2003; 15 (9): 1207-1209
View details for DOI 10.1109/lpt.2003.816706
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Nonlinear photonic crystal microdevices for optical integration
Optics Letters
2003; 28 (8): 637-639
View details for DOI 10.1364/ol.28.000637
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Creating large bandwidth line defects by embedding dielectric waveguides into photonic crystal slabs
APPLIED PHYSICS LETTERS
2002; 81 (21): 3915-3917
View details for DOI 10.1063/1.1523637
View details for Web of Science ID 000179207300001
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Gene expression patterns in human liver cancers
MOLECULAR BIOLOGY OF THE CELL
2002; 13 (6): 1929-1939
Abstract
Hepatocellular carcinoma (HCC) is a leading cause of death worldwide. Using cDNA microarrays to characterize patterns of gene expression in HCC, we found consistent differences between the expression patterns in HCC compared with those seen in nontumor liver tissues. The expression patterns in HCC were also readily distinguished from those associated with tumors metastatic to liver. The global gene expression patterns intrinsic to each tumor were sufficiently distinctive that multiple tumor nodules from the same patient could usually be recognized and distinguished from all the others in the large sample set on the basis of their gene expression patterns alone. The distinctive gene expression patterns are characteristic of the tumors and not the patient; the expression programs seen in clonally independent tumor nodules in the same patient were no more similar than those in tumors from different patients. Moreover, clonally related tumor masses that showed distinct expression profiles were also distinguished by genotypic differences. Some features of the gene expression patterns were associated with specific phenotypic and genotypic characteristics of the tumors, including growth rate, vascular invasion, and p53 overexpression.
View details for DOI 10.1091/mbc.02-02-0023
View details for Web of Science ID 000176418800012
View details for PubMedID 12058060
View details for PubMedCentralID PMC117615
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Photonic-crystal slow-light enhancement of nonlinear phase sensitivity
Journal of the Optical Society of America B-Optical Physics
2002; 19 (9): 2052-2059
View details for DOI 10.1364/josab.19.002052
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Wide bandwidth, large, and tunable polarization mode dispersions in multilayered omnidirectional reflectors
Applied Physics Letters
2002; 81 (2): 187-189
View details for DOI 10.1063/1.1491284
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Sharp asymmetric line shapes in side-coupled waveguide-cavity systems
Applied Physics Letters
2002; 80 (6): 908-910
View details for DOI 10.1063/1.1448174
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Analysis of guided resonances in photonic crystal slabs
Physical Review B
2002; 65 (23)
View details for DOI 235112 10.1103/PhysRevB.65.235112
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Waveguide branches in photonic crystals
Journal of the Optical Society of America B-Optical Physics
2001; 18 (2): 162-165
View details for DOI 10.1364/josab.18.000162
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Enhanced coupling to vertical radiation using a two-dimensional photonic crystal in a semiconductor light-emitting diode
Applied Physics Letters
2001; 78 (5): 563-565
View details for DOI 10.1063/1.1342048
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Can silicon dimers form logic gates?
Nanotechnology
2001; 12 (3): 391-393
View details for DOI 10.1088/0957-4484/12/3/330
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Multipole-cancellation mechanism for high-Q cavities in the absence of a complete photonic band gap
Applied Physics Letters
2001; 78 (22): 3388-3390
View details for DOI 10.1063/1.1375838
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Molding the flow of light
Computing in Science & Engineering
2001; 3 (6): 38-47
View details for DOI 10.1109/5992.963426
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Loss-induced on/off switching in a channel add/drop filter
Physical Review B
2001; 64 (24)
View details for DOI 245302 10.1103/PhysRevB.64.245302
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Emulation of two-dimensional photonic crystal defect modes in a photonic crystal with a three-dimensional photonic band gap
Physical Review B
2001; 64 (7): art. no.-075313
View details for DOI 10.1103/PhysRevB.64.075313
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An all-dielectric coaxial waveguide
Science
2000; 289 (5478): 415-419
View details for DOI 10.1126/science.289.5478.415
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Linear waveguides in photonic-crystal slabs
Physical Review B
2000; 62 (12): 8212-8222
View details for DOI 10.1103/PhysRevB.62.8212
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Rate-equation analysis of output efficiency and modulation rate of photonic-crystal light-emitting diodes
: Ieee Journal of Quantum Electronics
2000; 36 (10): 1123-1130
View details for DOI 10.1109/3.880652
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Photonic band gap airbridge microcavity resonances in GaAs/AlxOy waveguides
Journal of Applied Physics
2000; 87 (3): 1578-1580
View details for DOI 10.1063/1.372055
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Self-oriented regular arrays of carbon nanotubes and their field emission properties
Science (New York, N.Y.)
1999; 283 (5401): 512–14
Abstract
The synthesis of massive arrays of monodispersed carbon nanotubes that are self-oriented on patterned porous silicon and plain silicon substrates is reported. The approach involves chemical vapor deposition, catalytic particle size control by substrate design, nanotube positioning by patterning, and nanotube self-assembly for orientation. The mechanisms of nanotube growth and self-orientation are elucidated. The well-ordered nanotubes can be used as electron field emission arrays. Scaling up of the synthesis process should be entirely compatible with the existing semiconductor processes, and should allow the development of nanotube devices integrated into silicon technology.
View details for PubMedID 9915692
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Theoretical analysis of channel drop tunneling processes
Physical Review B
1999; 59 (24): 15882-15892
View details for DOI 10.1103/PhysRevB.59.15882
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Interband transitions in photonic crystals
Physical Review B
1999; 59 (3): 1551-1554
View details for DOI 10.1103/PhysRevB.59.1551
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The role of the thermal oxide in GaAs-based photonic bandgap waveguide microcavities
Advanced Materials
1999; 11 (6): 501-+
View details for DOI 10.1002/(sici)1521-4095(199904)11:6<501::aid-adma501>3.0.co;2-h
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Absorbing boundary conditions for FDTD simulations of photonic crystal waveguides
Ieee Microwave and Guided Wave Letters
1999; 9 (12): 502-504
View details for DOI 10.1109/75.819374
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One-dimensional photonic bandgap microcavities for strong optical confinement in GaAs and GaAs/AlxOy semiconductor waveguides
Journal of Lightwave Technology
1999; 17 (11): 2152-2160
View details for DOI 10.1109/50.803006
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Coupling of modes analysis of resonant channel add-drop filters
Ieee Journal of Quantum Electronics
1999; 35 (9): 1322-1331
View details for DOI 10.1109/3.784592
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Near-field scanning optical microscopy as a simultaneous probe of fields and band structure of photonic crystals: A computational study
Applied Physics Letters
1999; 75 (22): 3461-3463
View details for DOI 10.1063/1.125296
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High-density integrated optics
Journal of Lightwave Technology
1999; 17 (9): 1682-1692
View details for DOI 10.1109/50.788575
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Guided modes in photonic crystal slabs
Physical Review B
1999; 60 (8): 5751-5758
View details for DOI 10.1103/PhysRevB.60.5751
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Photonic band-gap waveguide microcavities: Monorails and air bridges
Journal of Vacuum Science & Technology B
1999; 17 (3): 1171-1174
View details for DOI 10.1116/1.590717
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Mode-coupling analysis of multipole symmetric resonant add/drop filters
Ieee Journal of Quantum Electronics
1999; 35 (10): 1451-1460
View details for DOI 10.1109/3.792565
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Guiding optical light in air using an all-dielectric structure
Journal of Lightwave Technology
1999; 17 (11): 2039-2041
View details for DOI 10.1109/50.802992
- Channel drop filters in photonic crystals Optics Expres 1998; 3 (1): 4-11
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Omnidirectional reflection from a one-dimensional photonic crystal
Optics Letters
1998; 23 (20): 1573-1575
View details for DOI 10.1364/ol.23.001573
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Channel drop tunneling through localized states
Physical Review Letters
1998; 80 (5): 960-963
View details for DOI 10.1103/PhysRevLett.80.960
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Three-dimensional photon confinement in photonic crystals of low-dimensional periodicity
1998
View details for DOI 10.1049/ip-opt:19982467
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Elimination of cross talk in waveguide intersections
Optics Letters
1998; 23 (23): 1855-1857
View details for DOI 10.1364/ol.23.001855
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Bound states in photonic crystal waveguides and waveguide bends
Physical Review B
1998; 58 (8): 4809-4817
View details for DOI 10.1103/PhysRevB.58.4809
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A dielectric omnidirectional reflector
Science
1998; 282 (5394): 1679-1682
View details for DOI 10.1126/science.282.5394.1679
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3D metallo-dielectric photonic crystals with strong capacitive coupling between metallic islands
Physical Review Letters
1998; 80 (13): 2829-2832
View details for DOI 10.1103/PhysRevLett.80.2829
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Photonic crystals
Solid State Communications
1997; 102 (2-3): 165-173
View details for DOI 10.1016/s0038-1098(96)00716-8
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Photonic crystals: Putting a new twist on light (vol 386, pg 143, 1997)
Nature
1997; 387 (6635): 830
View details for DOI 10.1038/42999
- Photonic-bandgap microcavities in optical waveguides Nature 1997; 390 (6656): 143-145
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Photonic crystals: Putting a new twist on light
Nature
1997; 386 (6621): 143-149
View details for DOI 10.1038/386143a0
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High extraction efficiency of spontaneous emission from slabs of photonic crystals
Physical Review Letters
1997; 78 (17): 3294-3297
View details for DOI 10.1103/PhysRevLett.78.3294
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High transmission through sharp bends in photonic crystal waveguides
Physical Review Letters
1996; 77 (18): 3787-3790
View details for DOI 10.1103/PhysRevLett.77.3787
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Optical filters from photonic band gap air bridges
Journal of Lightwave Technology
1996; 14 (11): 2575-2580
View details for DOI 10.1109/50.548157
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Single-mode waveguide microcavity for fast optical switching
Optics Letters
1996; 21 (24): 2017-2019
View details for DOI 10.1364/ol.21.002017
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Large omnidirectional band gaps in metallodielectric photonic crystals
Physical Review B
1996; 54 (16): 11245-11251
View details for DOI 10.1103/PhysRevB.54.11245
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Microcavities in photonic crystals: Mode symmetry, tunability, and coupling efficiency
Physical Review B
1996; 54 (11): 7837-7842
View details for DOI 10.1103/PhysRevB.54.7837
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AIR-BRIDGE MICROCAVITIES
Applied Physics Letters
1995; 67 (2): 167-169
View details for DOI 10.1063/1.114655
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GUIDED AND DEFECT MODES IN PERIODIC DIELECTRIC WAVE-GUIDES
Journal of the Optical Society of America B-Optical Physics
1995; 12 (7): 1267-1272
View details for DOI 10.1364/josab.12.001267
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THEORETICAL INVESTIGATION OF FABRICATION-RELATED DISORDER ON THE PROPERTIES OF PHOTONIC CRYSTALS
Journal of Applied Physics
1995; 78 (3): 1415-1418
View details for DOI 10.1063/1.360298
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DESIGN OF 3-DIMENSIONAL PHOTONIC CRYSTALS AT SUBMICRON LENGTH SCALES
Applied Physics Letters
1994; 65 (11): 1466-1468
View details for DOI 10.1063/1.112017