Bio

Matthias Kling is a Professor of Photon Science and (by courtesy) of Applied Physics at Stanford University and the Director of the Science, Research and Development (SRD) Division at the Linac Coherent Light Source (LCLS) at the SLAC National Accelerator Laboratory. Kling received a Diploma in Physics in 1998 and a PhD in Physical Chemistry in 2002 from Goettingen University in Germany. He subsequently was a postdoctoral researcher at the University of California at Berkeley and at AMOLF in Amsterdam, The Netherlands. From 2007 Kling led the Research Group on Attosecond Imaging at the Max Planck Institute of Quantum Optics (MPQ) in Garching, Germany, and was Assistant Professor at Kansas-State University from 2009 until 2013. In 2013, he became Professor of Physics at the Ludwig-Maximilians-Universität (LMU) in Munich in Germany and was appointed as Max Planck Fellow at MPQ in 2019. Kling joined Stanford University in 2021, leading the Research Group on Ultrafast Electronics and Nanophotonics and serving as the Director of the SRD Division at LCLS at SLAC.

Academic Appointments

Administrative Appointments

  • Professor of Photon Science & Applied Physics (by courtesy), Stanford University (2021 - Present)
  • SRD Division Director, LCLS, SLAC (2021 - Present)
  • Max Planck Fellow, Max Planck Institute of Quantum Optics, Germany (2019 - 2023)
  • Professor of Physics, LMU Munich, Germany (2013 - 2021)
  • Assistant Professor of Physics, Kansas-State University (2009 - 2013)
  • Max Planck Group Leader, Max Planck Institute of Quantum Optics, Germany (2007 - 2013)

Honors & Awards

  • OPTICA Fellow, OPTICA (2024)
  • APS Fellow, American Physical Society (2019)
  • Max Planck Fellow, Max Planck Society (2019)
  • ERC Starting Grant, European Research Council (2013)
  • Early Career Award, Department of Energy (2012)
  • Heisenberg Fellow, German Research Foundation (2012)
  • Nernst-Haber Bodenstein Prize, German Bunsen Society (2012)
  • Roentgen Prize, Giessen University (2011)
  • Emmy-Noether Fellow, German Research Foundation (2007)
  • Marie-Curie Fellow, European Research Council (2004)
  • Feodor-Lynen Fellow, Alexander von Humboldt foundation (2003)

Professional Education

  • Ph.D., University of Goettingen, Germany, Physical Chemistry (2002)
  • Certificate, Jena University, Germany, Laser Physics (2000)
  • Diploma, University of Goettingen, Germany, Physics (1998)

Contact

  • Academic
    mfkling@slac.stanford.edu
    University - Faculty Department: Energy Sciences Position: Professor
    University - Faculty Department: SLAC National Accelerator Laboratory Position: Professor
    • 2575 Sand Hill Rd
    • Mailstop 0019
    • Menlo Park,  California  94025 

Additional Info

Links

Current Research and Scholarly Interests

The fastest timescale of electron motion within nanostructures is attoseconds (1 attosecond = 10-18 seconds). We have pioneered the field attosecond nanophotonics and are currently conducting research to extend the state-of-the-art to multi-dimensional spectroscopies, x-ray emission and scattering using intense attosecond XFEL pulses. We aim to explore the dynamics of many-electron effects, including correlation-driven and collective effects. A particularly important open question is the transition from many-body quantum physics to classical dynamics. This will largely impact applications of nanosystems in optoelectronic devices used in ultrafast electronics and computing. As an example, ultrafast plasmonic circuitry can overcome current limitations in resistive electronics and might open an avenue towards quantum computing at ambient temperature.

We also address the question, how aerosolized particles can enable and catalyze light-induced chemical processes. Reaction nanoscopy is a powerful method that is developed in our group for analyzing the surface chemistry on aerosols with nanometer spatial and femtosecond temporal resolution. We aim to advance this technique to solve fundamental questions in astro- and atmospheric chemistry. Among these are the mechanisms of chemical transformations under extreme conditions, where such particles are exposed to high-intensity or high-energy radiation.

We aim to develop, expand, and exploit field-resolved spectroscopies towards higher frequencies in the THz and PHz domains. Opening up these frequency ranges will enable sensitivity to a manyfold of vibrational and electronic transitions in organic electronics and 2D-materials. Field-resolved spectroscopy is a powerful technique that permits addressing the sub-cycle response of a solid to a lightfield. Exploring and controlling many-body excitations and scattering dynamics opens a path for optimized energy conversion in optoelectronic devices. The sub-cycle control of a device builds the basis for lightwave electronics, which may push the speed of computing to its ultimate limit.

We engage in the development of high-average and high-peak power ultrashort light sources. These include optical-parametric chirped pulse amplifiers (OPCPAs) driven by high-power fiber, thin-disk and Innoslab amplifiers. We focus on ultrashort few-cycle pulse generation in the visible and mid-infared spectral region with stable and controllable electric field waveforms. The R&D efforts also include nonlinear tools for pulse characterization. Such capabilities are instrumental in addition to the facility-based light sources in our research on ultrafast nanophotonics, lightwave electronics, and ultrafast x-ray science.

2024-25 Courses

Stanford Advisees

All Publications

  • Petahertz electronics NATURE REVIEWS PHYSICS Heide, C., Keathley, P. D., Kling, M. F. 2024

    View details for DOI 10.1038/s42254-024-00764-7

    View details for Web of Science ID 001325763200001

  • Catalysis in Extreme Field Environments: A Case Study of Strongly Ionized SiO2Nanoparticle Surfaces. Journal of the American Chemical Society Linker, T. M., Dagar, R., Feinberg, A., Sahel-Schackis, S., Nomura, K., Nakano, A., Shimojo, F., Vashishta, P., Bergmann, U., Kling, M. F., Summers, A. M. 2024

    Abstract

    High electric fields can significantly alter catalytic environments and the resultant chemical processes. Such fields arise naturally in biological systems but can also be artificially induced through localized nanoscale excitations. Recently, strong field excitation of dielectric nanoparticles has emerged as an avenue for studying catalysis in highly ionized environments, producing extreme electric fields. While the dynamics of laser-driven surface ion emission has been extensively explored, understanding the molecular dynamics leading to fragmentation has remained elusive. Here, we employ a multiscale approach performing nonadiabatic quantum molecular dynamics (NAQMD) simulations on hydrogenated silica surfaces in both bare and wetted environments under field conditions mimicking those of an ionized nanoparticle. Our findings indicate that hole localization drives fragmentation dynamics, leading to surface silanol dissociation within 50 fs and charge transfer-induced water splitting in wetted environments within 150 fs. Further insight into such ultrafast mechanisms is critical for the advancement of catalysis on the surface of charged nanosystems.

    View details for DOI 10.1021/jacs.4c08550

    View details for PubMedID 39327984

  • Tracking surface charge dynamics on single nanoparticles. Science advances Dagar, R., Zhang, W., Rosenberger, P., Linker, T. M., Sousa-Castillo, A., Neuhaus, M., Mitra, S., Biswas, S., Feinberg, A., Summers, A. M., Nakano, A., Vashishta, P., Shimojo, F., Wu, J., Vera, C. C., Maier, S. A., Cortés, E., Bergues, B., Kling, M. F. 2024; 10 (32): eadp1890

    Abstract

    Surface charges play a fundamental role in physics and chemistry, in particular in shaping the catalytic properties of nanomaterials. However, tracking nanoscale surface charge dynamics remains challenging due to the involved length and time scales. Here, we demonstrate time-resolved access to the nanoscale charge dynamics on dielectric nanoparticles using reaction nanoscopy. We present a four-dimensional visualization of the spatiotemporal evolution of the charge density on individual SiO2 nanoparticles under strong-field irradiation with femtosecond-nanometer resolution. The initially localized surface charges exhibit a biexponential redistribution over time. Our findings reveal the influence of surface charges on surface molecular bonding through quantum dynamical simulations. We performed semi-classical simulations to uncover the roles of diffusion and charge loss in the surface charge redistribution process. Understanding nanoscale surface charge dynamics and its influence on chemical bonding on a single-nanoparticle level unlocks an increased ability to address global needs in renewable energy and advanced health care.

    View details for DOI 10.1126/sciadv.adp1890

    View details for PubMedID 39110806

    View details for PubMedCentralID PMC11305382

  • Attosecond delays in X-ray molecular ionization. Nature Driver, T., Mountney, M., Wang, J., Ortmann, L., Al-Haddad, A., Berrah, N., Bostedt, C., Champenois, E. G., DiMauro, L. F., Duris, J., Garratt, D., Glownia, J. M., Guo, Z., Haxton, D., Isele, E., Ivanov, I., Ji, J., Kamalov, A., Li, S., Lin, M. F., Marangos, J. P., Obaid, R., O'Neal, J. T., Rosenberger, P., Shivaram, N. H., Wang, A. L., Walter, P., Wolf, T. J., Wörner, H. J., Zhang, Z., Bucksbaum, P. H., Kling, M. F., Landsman, A. S., Lucchese, R. R., Emmanouilidou, A., Marinelli, A., Cryan, J. P. 2024; 632 (8026): 762-767

    Abstract

    The photoelectric effect is not truly instantaneous but exhibits attosecond delays that can reveal complex molecular dynamics1-7. Sub-femtosecond-duration light pulses provide the requisite tools to resolve the dynamics of photoionization8-12. Accordingly, the past decade has produced a large volume of work on photoionization delays following single-photon absorption of an extreme ultraviolet photon. However, the measurement of time-resolved core-level photoionization remained out of reach. The required X-ray photon energies needed for core-level photoionization were not available with attosecond tabletop sources. Here we report measurements of the X-ray photoemission delay of core-level electrons, with unexpectedly large delays, ranging up to 700 as in NO near the oxygen K-shell threshold. These measurements exploit attosecond soft X-ray pulses from a free-electron laser to scan across the entire region near the K-shell threshold. Furthermore, we find that the delay spectrum is richly modulated, suggesting several contributions, including transient trapping of the photoelectron owing to shape resonances, collisions with the Auger-Meitner electron that is emitted in the rapid non-radiative relaxation of the molecule and multi-electron scattering effects. The results demonstrate how X-ray attosecond experiments, supported by comprehensive theoretical modelling, can unravel the complex correlated dynamics of core-level photoionization.

    View details for DOI 10.1038/s41586-024-07771-9

    View details for PubMedID 39169246

    View details for PubMedCentralID 7399650

  • Terawatt-scale attosecond X-ray pulses from a cascaded superradiant free-electron laser NATURE PHOTONICS Franz, P., Li, S., Driver, T., Robles, R. R., Cesar, D., Isele, E., Guo, Z., Wang, J., Duris, J. P., Larsen, K., Glownia, J. M., Cheng, X., Hoffmann, M. C., Li, X., Lin, M., Kamalov, A., Obaid, R., Summers, A., Sudar, N., Thierstein, E., Zhang, Z., Kling, M. F., Huang, Z., Cryan, J. P., Marinelli, A. 2024

    View details for DOI 10.1038/s41566-024-01427-w

    View details for Web of Science ID 001220935700001

  • Light-wave-controlled Haldane model in monolayer hexagonal boron nitride. Nature Mitra, S., Jiménez-Galán, Á., Aulich, M., Neuhaus, M., Silva, R. E., Pervak, V., Kling, M. F., Biswas, S. 2024

    Abstract

    In recent years, the stacking and twisting of atom-thin structures with matching crystal symmetry has provided a unique way to create new superlattice structures in which new properties emerge1,2. In parallel, control over the temporal characteristics of strong light fields has allowed researchers to manipulate coherent electron transport in such atom-thin structures on sublaser-cycle timescales3,4. Here we demonstrate a tailored light-wave-driven analogue to twisted layer stacking. Tailoring the spatial symmetry of the light waveform to that of the lattice of a hexagonal boron nitride monolayer and then twisting this waveform result in optical control of time-reversal symmetry breaking5 and the realization of the topological Haldane model6 in a laser-dressed two-dimensional insulating crystal. Further, the parameters of the effective Haldane-type Hamiltonian can be controlled by rotating the light waveform, thus enabling ultrafast switching between band structure configurations and allowing unprecedented control over the magnitude, location and curvature of the bandgap. This results in an asymmetric population between complementary quantum valleys that leads to a measurable valley Hall current7, which can be detected by optical harmonic polarimetry. The universality and robustness of our scheme paves the way to valley-selective bandgap engineering on the fly and unlocks the possibility of creating few-femtosecond switches with quantum degrees of freedom.

    View details for DOI 10.1038/s41586-024-07244-z

    View details for PubMedID 38622268

    View details for PubMedCentralID 6205603

  • Experimental demonstration of attosecond pump-probe spectroscopy with an X-ray free-electron laser NATURE PHOTONICS Guo, Z., Driver, T., Beauvarlet, S., Cesar, D., Duris, J., Franz, P. L., Alexander, O., Bohler, D., Bostedt, C., Averbukh, V., Cheng, X., Dimauro, L. F., Doumy, G., Forbes, R., Gessner, O., Glownia, J. M., Isele, E., Kamalov, A., Larsen, K. A., Li, S., Li, X., Lin, M., Mccracken, G. A., Obaid, R., O'Neal, J. T., Robles, R. R., Rolles, D., Ruberti, M., Rudenko, A., Slaughter, D. S., Sudar, N. S., Thierstein, E., Tuthill, D., Ueda, K., Wang, E., Wang, A. L., Wang, J., Weber, T., Wolf, T. A., Young, L., Zhang, Z., Bucksbaum, P. H., Marangos, J. P., Kling, M. F., Huang, Z., Walter, P., Inhester, L., Berrah, N., Cryan, J. P., Marinelli, A. 2024

    View details for DOI 10.1038/s41566-024-01419-w

    View details for Web of Science ID 001200371400001

  • Far-Field Petahertz Sampling of Plasmonic Fields. Nano letters Wong, K. F., Li, W., Wang, Z., Wanie, V., Månsson, E., Hoeing, D., Blöchl, J., Nubbemeyer, T., Azzeer, A., Trabattoni, A., Lange, H., Calegari, F., Kling, M. F. 2024

    Abstract

    The response of metal nanostructures to optical excitation leads to localized surface plasmon (LSP) generation with nanoscale field confinement driving applications in, for example, quantum optics and nanophotonics. Field sampling in the terahertz domain has had a tremendous impact on the ability to trace such collective excitations. Here, we extend such capabilities and introduce direct sampling of LSPs in a more relevant petahertz domain. The method allows to measure the LSP field in arbitrary nanostructures with subcycle precision. We demonstrate the technique for colloidal nanoparticles and compare the results to finite-difference time-domain calculations, which show that the build-up and dephasing of the plasmonic excitation can be resolved. Furthermore, we observe a reshaping of the spectral phase of the few-cycle pulse, and we demonstrate ad-hoc pulse shaping by tailoring the plasmonic sample. The methodology can be extended to single nanosystems and applied in exploring subcycle, attosecond phenomena.

    View details for DOI 10.1021/acs.nanolett.4c00658

    View details for PubMedID 38530705

  • Sensitivity Enhancement in Photoconductive Light Field Sampling ADVANCED OPTICAL MATERIALS Altwaijry, N., Qasim, M., Zimin, D., Karpowicz, N., Kling, M. F. 2024

    View details for DOI 10.1002/adom.202302490

    View details for Web of Science ID 001179163100001

  • Propagation effects in polarization-gated attosecond soft-X-ray pulse generation. Optics express Mitra, S., Schotz, J., Zhang, C., Hyuk Ko, D., Chang, Z., Corkum, P. B., Staudte, A., Kling, M. F. 2024; 32 (2): 1151-1160

    Abstract

    Accurate estimation of the duration of soft-x-ray pulses from high-harmonic generation (HHG) remains challenging given their higher photon energies and broad spectral bandwidth. The carrier-envelope-phase (CEP) dependence of generated soft-x-ray spectra is indicative of attosecond pulse generation, but advanced simulations are needed to infer the pulse duration from such data. Here, we employ macroscopic propagation simulations to reproduce experimental polarization-gated CEP-dependent soft-x-ray spectra. The simulations indicate chirped pulses, which we theoretically find to be compressible in hydrogen plasmas, suggesting this as a viable compression scheme for broadband soft-x-rays from HHG.

    View details for DOI 10.1364/OE.504636

    View details for PubMedID 38297673

  • From Ultrafast Light-Induced Currents to Spatially-Resolved Field Sampling Bloechl, J., Schoetz, J., Bergues, B., Kling, M. F., Chini, M., Argenti, L., Fang, L. SPRINGER INTERNATIONAL PUBLISHING AG. 2024: 177-186

    View details for DOI 10.1007/978-3-031-47938-0_17

    View details for Web of Science ID 001260658600017

  • 49 W carrier-envelope-phase-stable few-cycle 2.1 & mu;m OPCPA at 10 kHz OPTICS EXPRESS Seeger, M. F., Kammerer, D., Bloechl, J., Neuhaus, M., Pervak, V., Nubbemeyer, T., Kling, M. F. 2023; 31 (15): 24821-24834

    Abstract

    We demonstrate a mid-infrared optical parametric chirped pulse amplifier (OPCPA), delivering 2.1 µm center wavelength pulses with 20 fs duration and 4.9 mJ energy at 10 kHz repetition rate. This self-seeded system is based on a kW-class Yb:YAG thin-disk amplifier driving a CEP stable short-wavelength-infrared (SWIR) generation and three consecutive OPCPA stages. Our SWIR source achieves an average power of 49 W, while still maintaining excellent phase and average power stability with sub-100 mrad carrier-envelope-phase-noise and 0.8% average power fluctuations. These parameters enable the OPCPA setup to drive attosecond pump probe spectroscopy experiments with photon energies in the water window.

    View details for DOI 10.1364/OE.493326

    View details for Web of Science ID 001044920400002

    View details for PubMedID 37475300

  • Resonance Effect in Brunel Harmonic Generation in Thin Film Organic Semiconductors ADVANCED OPTICAL MATERIALS Li, W., Saleh, A., Sharma, M., Huenecke, C., Sierka, M., Neuhaus, M., Hedewig, L., Bergues, B., Alharbi, M., ALQahtani, H., Azzeer, A. M., Graefe, S., Kling, M. F., Alharbi, A. F., Wang, Z. 2023

    View details for DOI 10.1002/adom.202203070

    View details for Web of Science ID 000991603700001

  • Enhanced cutoff energies for direct and rescattered strong-field photoelectron emission of plasmonic nanoparticles. Nanophotonics (Berlin, Germany) Saydanzad, E., Powell, J., Summers, A., Robatjazi, S. J., Trallero-Herrero, C., Kling, M. F., Rudenko, A., Thumm, U. 2023; 12 (10): 1931-1942

    Abstract

    The efficient generation, accurate detection, and detailed physical tracking of energetic electrons are of applied interest for high harmonics generation, electron-impact spectroscopy, and femtosecond time-resolved scanning tunneling microscopy. We here investigate the generation of photoelectrons (PEs) by exposing plasmonic nanostructures to intense laser pulses in the infrared (IR) spectral regime and analyze the sensitivity of PE spectra to competing elementary interactions for direct and rescattered photoemission pathways. Specifically, we measured and numerically simulated emitted PE momentum distributions from prototypical spherical gold nanoparticles (NPs) with diameters between 5 and 70 nm generated by short laser pulses with peak intensities of 8.0 × 1012 and 1.2 × 1013 W/cm2, demonstrating the shaping of PE spectra by the Coulomb repulsion between PEs, accumulating residual charges on the NP, and induced plasmonic electric fields. Compared to well-understood rescattering PE cutoff energies for strong-field photoemission from gaseous atomic targets (10× the ponderomotive energy), our measured and simulated PE spectra reveal a dramatic cutoff-energy increase of two orders of magnitude with a significantly higher contribution from direct photoemission. Our findings indicate that direct PEs reach up to 93 % of the rescattered electron cutoff energy, in contrast to 20 % for gaseous atoms, suggesting a novel scheme for the development of compact tunable tabletop electron sources.

    View details for DOI 10.1515/nanoph-2023-0120

    View details for PubMedID 39635144

    View details for PubMedCentralID PMC11501197

  • Reaction nanoscopy of ion emission from sub-wavelength propanediol droplets. Nanophotonics (Berlin, Germany) Rosenberger, P., Dagar, R., Zhang, W., Majumdar, A., Neuhaus, M., Ihme, M., Bergues, B., Kling, M. F. 2023; 12 (10): 1823-1831

    Abstract

    Droplets provide unique opportunities for the investigation of laser-induced surface chemistry. Chemical reactions on the surface of charged droplets are ubiquitous in nature and can provide critical insight into more efficient processes for industrial chemical production. Here, we demonstrate the application of the reaction nanoscopy technique to strong-field ionized nanodroplets of propanediol (PDO). The technique's sensitivity to the near-field around the droplet allows for the in-situ characterization of the average droplet size and charge. The use of ultrashort laser pulses enables control of the amount of surface charge by the laser intensity. Moreover, we demonstrate the surface chemical sensitivity of reaction nanoscopy by comparing droplets of the isomers 1,2-PDO and 1,3-PDO in their ion emission and fragmentation channels. Referencing the ion yields to gas-phase data, we find an enhanced production of methyl cations from droplets of the 1,2-PDO isomer. Density functional theory simulations support that this enhancement is due to the alignment of 1,2-PDO molecules on the surface. The results pave the way towards spatio-temporal observations of charge dynamics and surface reactions on droplets.

    View details for DOI 10.1515/nanoph-2022-0714

    View details for PubMedID 39635141

    View details for PubMedCentralID PMC11501279

  • Enhanced cutoff energies for direct and rescattered strong-field photoelectron emission of plasmonic nanoparticles NANOPHOTONICS Saydanzad, E., Powell, J., Summers, A., Robatjazi, S., Trallero-Herrero, C., Kling, M. F., Rudenko, A., Thumm, U. 2023

    View details for DOI 10.1515/nanoph-2023-0120

    View details for Web of Science ID 000969260000001

  • Reaction nanoscopy of ion emission from sub-wavelength propanediol droplets NANOPHOTONICS Rosenberger, P., Dagar, R., Zhang, W., Majumdar, A., Neuhaus, M., Ihme, M., Bergues, B., Kling, M. F. 2023

    View details for DOI 10.1515/nanoph-2022-0714

    View details for Web of Science ID 000964452600001

  • Linear and Nonlinear Optical Properties of Iridium Nanoparticles Grown via Atomic Layer Deposition COATINGS Schmitt, P., Paul, P., Li, W., Wang, Z., David, C., Daryakar, N., Hanemann, K., Felde, N., Munser, A., Kling, M. F., Schroeder, S., Tuennermann, A., Szeghalmi, A. 2023; 13 (4)

    View details for DOI 10.3390/coatings13040787

    View details for Web of Science ID 000977104500001

  • Light-Induced Subnanometric Modulation of a Single-Molecule Electron Source. Physical review letters Yanagisawa, H., Bohn, M., Kitoh-Nishioka, H., Goschin, F., Kling, M. F. 2023; 130 (10): 106204

    Abstract

    Single-molecule electron sources of fullerenes driven via constant electric fields, approximately 1nm in size, produce peculiar emission patterns, such as a cross or a two-leaf pattern. By illuminating the electron sources with femtosecond light pulses, we discovered that largely modulated emission patterns appeared from single molecules. Our simulations revealed that emission patterns, which have been an intractable question for over seven decades, represent single-molecule molecular orbitals. Furthermore, the observed modulations originated from variations of single-molecule molecular orbitals, practically achieving the subnanometric optical modulation of an electron source.

    View details for DOI 10.1103/PhysRevLett.130.106204

    View details for PubMedID 36962055

  • Ion microscopy with evolutionary-algorithm-based autofocusing ENGINEERING RESEARCH EXPRESS Haniel, F. E., Hedewig, L., Schroeder, H., Kling, M. F., Bergues, B. 2023; 5 (1)

    View details for DOI 10.1088/2631-8695/acb419

    View details for Web of Science ID 000971730900001

  • Broadband Photoconductive Sampling in Gallium Phosphide ADVANCED OPTICAL MATERIALS Altwaijry, N., Qasim, M., Mamaikin, M., Schoetz, J., Golyari, K., Heynck, M., Ridente, E., Yakovlev, V. S., Karpowicz, N., Kling, M. F. 2023

    View details for DOI 10.1002/adom.202202994

    View details for Web of Science ID 000939665800001

  • Ultrafast quantum dynamics driven by the strong space-charge field of a relativistic electron beam OPTICA Cesar, D., Acharya, A., Cryan, J. P., Kartsev, A., Kling, M. F., Lindenberg, A. M., Pemmaraju, C. D., Poletayev, A. D., Yakovlev, V. S., Marinelli, A. 2023; 10 (1): 1-10

    View details for DOI 10.1364/OPTICA.471773

    View details for Web of Science ID 000927471100001

  • Strong-field physics with nanospheres ADVANCES IN PHYSICS-X Seiffert, L., Zherebtsov, S., Kling, M. F., Fennel, T. 2022; 7 (1)

    View details for DOI 10.1080/23746149.2021.2010595

    View details for Web of Science ID 000784409000001

  • Relaxation dynamics in excited helium nanodroplets probed with high resolution, time-resolved photoelectron spectroscopy PHYSICAL CHEMISTRY CHEMICAL PHYSICS LaForge, A. C., Asmussen, J. D., Bastian, B., Bonanomi, M., Callegari, C., De, S., Di Fraia, M., Gorman, L., Hartweg, S., Krishnan, S. R., Kling, M. F., Mishra, D., Mandal, S., Ngai, A., Pal, N., Plekan, O., Prince, K. C., Rosenberger, P., Serrata, E., Stienkemeier, F., Berrah, N., Mudrich, M. 2022: 28844-28852

    Abstract

    Superfluid helium nanodroplets are often considered as transparent and chemically inert nanometer-sized cryo-matrices for high-resolution or time-resolved spectroscopy of embedded molecules and clusters. On the other hand, when the helium nanodroplets are resonantly excited with XUV radiation, a multitude of ultrafast processes are initiated, such as relaxation into metastable states, formation of nanoscopic bubbles or excimers, and autoionization channels generating low-energy free electrons. Here, we discuss the full spectrum of ultrafast relaxation processes observed when helium nanodroplets are electronically excited. In particular, we perform an in-depth study of the relaxation dynamics occurring in the lowest 1s2s and 1s2p droplet bands using high resolution, time-resolved photoelectron spectroscopy. The simplified excitation scheme and improved resolution allow us to identify the relaxation into metastable triplet and excimer states even when exciting below the droplets' autoionization threshold, unobserved in previous studies.

    View details for DOI 10.1039/d2cp03335f

    View details for Web of Science ID 000890034400001

    View details for PubMedID 36422471

  • Strong-Field Control of Plasmonic Properties in Core-Shell Nanoparticles ACS PHOTONICS Powell, J. A., Li, J., Summers, A., Robatjazi, S., Davino, M., Rupp, P., Saydanzad, E., Sorensen, C. M., Rolles, D., Kling, M. F., Trallero, C., Thumm, U., Rudenko, A. 2022

    View details for DOI 10.1021/acsphotonics.2c00663

    View details for Web of Science ID 000878995500001

  • Complementary dispersive mirror pair produced in one coating run based on desired non-uniformity OPTICS EXPRESS Chen, Y., Li, W., Wang, Z., Hahner, D., Kling, M. F., Pervak, V. 2022; 30 (18): 32074-32083

    View details for DOI 10.1364/OE.467664

    View details for Web of Science ID 000850229100045

  • Spatiotemporal sampling of near-petahertz vortex fields OPTICA Bloechl, J., Schoetz, J., Maliakkal, A., Sreibere, N., Wang, Z., Rosenberger, P., Hommelhoff, P., Staudte, A., Corkum, P. B., Bergues, B., Kling, M. F. 2022; 9 (7): 755-761

    View details for DOI 10.1364/OPTICA.459612

    View details for Web of Science ID 000822022700013

  • Imaging elliptically polarized infrared near-fields on nanoparticles by strong-field dissociation of functional surface groups EUROPEAN PHYSICAL JOURNAL D Rosenberger, P., Dagar, R., Zhang, W., Sousa-Castillo, A., Neuhaus, M., Cortes, E., Maier, S. A., Costa-Vera, C., Kling, M. F., Bergues, B. 2022; 76 (6)

    View details for DOI 10.1140/epjd/s10053-022-00430-6

    View details for Web of Science ID 000817283600001

  • All-optical nanoscopic spatial control of molecular reaction yields on nanoparticles OPTICA Zhang, W., Dagar, R., Rosenberger, P., Sousa-Castillo, A., Neuhaus, M., Li, W., Khan, S. A., Alnaser, A. S., Cortes, E., Maier, S. A., Costa-Vera, C., Kling, M. F., Bergues, B. 2022; 9 (5): 551-560

    View details for DOI 10.1364/OPTICA.453915

    View details for Web of Science ID 000799613700015

  • Fifth-order nonlinear optical response of Alq(3) thin films RESULTS IN PHYSICS Saleh, A., Li, W., ALQahtani, H., Neuhaus, M., Alshehri, A., Bergues, B., Alharbi, M., Kling, M. F., Azzeer, A. M., Wang, Z., Alharbi, A. F. 2022; 37

    View details for DOI 10.1016/j.rinp.2022.105513

    View details for Web of Science ID 000798985800008

  • Few-femtosecond resolved imaging of laser-driven nanoplasma expansion NEW JOURNAL OF PHYSICS Peltz, C., Powell, J. A., Rupp, P., Summers, A., Gorkhover, T., Gallei, M., Halfpap, Antonsson, E., Langer, B., Trallero-Herrero, C., Graf, C., Ray, D., Liu, Q., Osipov, T., Bucher, M., Ferguson, K., Moeller, S., Zherebtsov, S., Rolles, D., Ruehl, E., Coslovich, G., Coffee, R. N., Bostedt, C., Rudenko, A., Kling, M. F., Fennel, T. 2022; 24 (4)

    View details for DOI 10.1088/1367-2630/ac5e86

    View details for Web of Science ID 000783683900001

  • Electro-optic characterization of synthesized infrared-visible light fields NATURE COMMUNICATIONS Ridente, E., Mamaikin, M., Altwaijry, N., Zimin, D., Kling, M. F., Pervak, V., Weidman, M., Krausz, F., Karpowicz, N. 2022; 13 (1): 1111

    Abstract

    The measurement and control of light field oscillations enable the study of ultrafast phenomena on sub-cycle time scales. Electro-optic sampling (EOS) is a powerful field characterization approach, in terms of both sensitivity and dynamic range, but it has not reached beyond infrared frequencies. Here, we show the synthesis of a sub-cycle infrared-visible pulse and subsequent complete electric field characterization using EOS. The sampled bandwidth spans from 700 nm to 2700 nm (428 to 110 THz). Tailored electric-field waveforms are generated with a two-channel field synthesizer in the infrared-visible range, with a full-width at half-maximum duration as short as 3.8 fs at a central wavelength of 1.7 µm (176 THz). EOS detection of the complete bandwidth of these waveforms extends it into the visible spectral range. To demonstrate the power of our approach, we use the sub-cycle transients to inject carriers in a thin quartz sample for nonlinear photoconductive field sampling with sub-femtosecond resolution.

    View details for DOI 10.1038/s41467-022-28699-6

    View details for Web of Science ID 000763605200010

    View details for PubMedID 35236857

    View details for PubMedCentralID PMC8891359

  • The emergence of macroscopic currents in photoconductive sampling of optical fields. Nature communications Schotz, J., Maliakkal, A., Blochl, J., Zimin, D., Wang, Z., Rosenberger, P., Alharbi, M., Azzeer, A. M., Weidman, M., Yakovlev, V. S., Bergues, B., Kling, M. F. 2022; 13 (1): 962

    Abstract

    Photoconductive field sampling enables petahertz-domain optoelectronic applications that advance our understanding of light-matter interaction. Despite the growing importance of ultrafast photoconductive measurements, a rigorous model for connecting the microscopic electron dynamics to the macroscopic external signal is lacking. This has caused conflicting interpretations about the origin of macroscopic currents. Here, we present systematic experimental studies on the signal formation in gas-phase photoconductive sampling. Our theoretical model, based on the Ramo-Shockley-theorem, overcomes the previously introduced artificial separation into dipole and current contributions. Extensive numerical particle-in-cell-type simulations permit a quantitative comparison with experimental results and help to identify the roles of electron-neutral scattering and mean-field charge interactions. The results show that the heuristic models utilized so far are valid only in a limited range and are affected by macroscopic effects. Our approach can aid in the design of more sensitive and more efficient photoconductive devices.

    View details for DOI 10.1038/s41467-022-28412-7

    View details for PubMedID 35181662

  • Attosecond coherent electron motion in Auger-Meitner decay. Science (New York, N.Y.) Li, S., Driver, T., Rosenberger, P., Champenois, E. G., Duris, J., Al-Haddad, A., Averbukh, V., Barnard, J. C., Berrah, N., Bostedt, C., Bucksbaum, P. H., Coffee, R. N., DiMauro, L. F., Fang, L., Garratt, D., Gatton, A., Guo, Z., Hartmann, G., Haxton, D., Helml, W., Huang, Z., LaForge, A. C., Kamalov, A., Knurr, J., Lin, M., Lutman, A. A., MacArthur, J. P., Marangos, J. P., Nantel, M., Natan, A., Obaid, R., O'Neal, J. T., Shivaram, N. H., Schori, A., Walter, P., Wang, A. L., Wolf, T. J., Zhang, Z., Kling, M. F., Marinelli, A., Cryan, J. P. 1800: eabj2096

    Abstract

    [Figure: see text].

    View details for DOI 10.1126/science.abj2096

    View details for PubMedID 34990213

  • Efficient nonlinear compression of a thin-disk oscillator to 8.5 fs at 55 W average power OPTICS LETTERS Barbiero, G., Wang, H., Grassl, M., Groebmeyer, S., Kimbaras, D., Neuhaus, M., Pervak, V., Nubbemeyer, T., Fattahi, H., Kling, M. F. 2021; 46 (21): 5304-5307

    Abstract

    We demonstrate an efficient hybrid-scheme for nonlinear pulse compression of high-power thin-disk oscillator pulses to the sub-10 fs regime. The output of a home-built, 16 MHz, 84 W, 220 fs Yb:YAG thin-disk oscillator at 1030 nm is first compressed to 17 fs in two nonlinear multipass cells. In a third stage, based on multiple thin sapphire plates, further compression to 8.5 fs with 55 W output power and an overall optical efficiency of 65% is achieved. Ultrabroadband mid-infrared pulses covering the spectral range 2.4-8µm were generated from these compressed pulses by intra-pulse difference frequency generation.

    View details for DOI 10.1364/OL.440303

    View details for Web of Science ID 000713723300004

    View details for PubMedID 34724461

  • Onset of charge interaction in strong-field photoemission from nanometric needle tips NANOPHOTONICS Schoetz, J., Seiffert, L., Maliakkal, A., Bloechl, J., Zimin, D., Rosenberger, P., Bergues, B., Hommelhoff, P., Krausz, F., Fennel, T., Kling, M. F. 2021; 10 (14): 3769-3775

    View details for DOI 10.1515/nanoph-2021-0276

    View details for Web of Science ID 000712886600020

  • Tunable isolated attosecond X-ray pulses with gigawatt peak power from a free-electron laser NATURE PHOTONICS Duris, J., Li, S., Driver, T., Champenois, E. G., MacArthur, J. P., Lutman, A. A., Zhang, Z., Rosenberger, P., Aldrich, J. W., Coffee, R., Coslovich, G., Decker, F., Glownia, J. M., Hartmann, G., Helml, W., Kamalov, A., Knurr, J., Krzywinski, J., Lin, M., Nantel, M., Natan, A., O'Neal, J., Shivaram, N., Walter, P., Wang, A., Welch, J. J., Wolf, T. A., Xu, J. Z., Kling, M. F., Bucksbaum, P. H., Zholents, A., Huang, Z., Cryan, J. P., Marinelli, A., Marangos, J. P. 2020; 14 (1): 30-+

    View details for DOI 10.1038/s41566-019-0549-5

    View details for Web of Science ID 000504727600007

  • Attosecond transient absorption spooktroscopy: a ghost imaging approach to ultrafast absorption spectroscopy. Physical chemistry chemical physics : PCCP Driver, T., Li, S., Champenois, E. G., Duris, J., Ratner, D., Lane, T. J., Rosenberger, P., Al-Haddad, A., Averbukh, V., Barnard, T., Berrah, N., Bostedt, C., Bucksbaum, P. H., Coffee, R., DiMauro, L. F., Fang, L., Garratt, D., Gatton, A., Guo, Z., Hartmann, G., Haxton, D., Helml, W., Huang, Z., LaForge, A., Kamalov, A., Kling, M. F., Knurr, J., Lin, M., Lutman, A. A., MacArthur, J. P., Marangos, J. P., Nantel, M., Natan, A., Obaid, R., O'Neal, J. T., Shivaram, N. H., Schori, A., Walter, P., Li Wang, A., Wolf, T. J., Marinelli, A., Cryan, J. P. 2019

    Abstract

    The recent demonstration of isolated attosecond pulses from an X-ray free-electron laser (XFEL) opens the possibility for probing ultrafast electron dynamics at X-ray wavelengths. An established experimental method for probing ultrafast dynamics is X-ray transient absorption spectroscopy, where the X-ray absorption spectrum is measured by scanning the central photon energy and recording the resultant photoproducts. The spectral bandwidth inherent to attosecond pulses is wide compared to the resonant features typically probed, which generally precludes the application of this technique in the attosecond regime. In this paper we propose and demonstrate a new technique to conduct transient absorption spectroscopy with broad bandwidth attosecond pulses with the aid of ghost imaging, recovering sub-bandwidth resolution in photoproduct-based absorption measurements.

    View details for DOI 10.1039/c9cp03951a

    View details for PubMedID 31793561

  • Generation and Characterization of Attosecond Pulses from an X-ray Free-electron Laser Li, S., Rosenberger, P., Champenois, E. G., Driver, T., Bucksbaum, P. H., Coffee, R., Gatton, A., Hartmann, G., Helml, W., Huang, Z., Knurr, J., Kling, M. F., Lin, M., MacArthur, J. P., Maxwell, T. J., Nantel, M., Natan, A., Oneal, J. T., Shivaram, N. H., Walter, P., Wolf, T. A., Cryan, J. P., Marinelli, A., IEEE IEEE. 2019

    View details for Web of Science ID 000482226301273

  • Roadmap on plasmonics JOURNAL OF OPTICS Stockman, M. I., Kneipp, K., Bozhevolnyi, S. I., Saha, S., Dutta, A., Ndukaife, J., Kinsey, N., Reddy, H., Guler, U., Shalaev, V. M., Boltasseva, A., Gholipour, B., Krishnamoorthy, H. S., MacDonald, K. F., Soci, C., Zheludev, N. I., Savinov, V., Singh, R., Gross, P., Lienau, C., Vadai, M., Solomon, M. L., Barton, D. R., Lawrence, M., Dionne, J. A., Boriskina, S. V., Esteban, R., Aizpurua, J., Zhang, X., Yang, S., Wang, D., Wang, W., Odom, T. W., Accanto, N., de Roque, P. M., Hancu, I. M., Piatkowski, L., van Hulst, N. F., Kling, M. F. 2018; 20 (4)

    View details for DOI 10.1088/2040-8986/aaa114

    View details for Web of Science ID 000447428100001

https://orcid.org/0000-0002-1710-0775