Academic Appointments

  • Professor, Photon Science Directorate
  • Professor, Particle Physics and Astrophysics
  • Professor (By courtesy), Applied Physics

Honors & Awards

  • Fellow, American Physical Society (2015)
  • Guest Professorship, Peking University (2014-2015)
  • International Free Electron Laser Prize, FEL conference (2014)
  • Achievement in Accelerator Physics and Technology Prize, U.S. Particle Accelerator School (2011)
  • Division of Beam Physics Dissertation Award, American Physical Society (1998)

Professional Education

  • Ph.D., Stanford University, Physics (1998)
  • B.S., Caltech, Physics (1992)

2021-22 Courses

Stanford Advisees

All Publications

  • Laguerre-Gaussian Mode Laser Heater for Microbunching Instability Suppression in Free-Electron Lasers PHYSICAL REVIEW LETTERS Tang, J., Liu, W., Lemons, R., Vetter, S., Maxwell, T., Decker, F., Lutman, A., Krzywinski, J., Marcus, G., Moeller, S., Ratner, D., Huang, Z., Carbajo, S. 2020; 124 (13)
  • Simulation analysis and optimization of fresh-slice multistage free-electron lasers PHYSICAL REVIEW ACCELERATORS AND BEAMS Guo, T., Guetg, M. W., Ding, Y., Marinelli, A., Wu, J., Huang, Z., Lutman, A. A. 2020; 23 (3)
  • 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-+
  • Laguerre-Gaussian Mode Laser Heater for Microbunching Instability Suppression in Free-Electron Lasers. Physical review letters Tang, J. n., Lemons, R. n., Liu, W. n., Vetter, S. n., Maxwell, T. n., Decker, F. J., Lutman, A. n., Krzywinski, J. n., Marcus, G. n., Moeller, S. n., Huang, Z. n., Ratner, D. n., Carbajo, S. n. 2020; 124 (13): 134801


    Microbunching instability (MBI) driven by beam collective effects is known to be detrimental to high-brightness storage rings, linacs, and free-electron lasers (FELs). One known way to suppress this instability is to induce a small amount of energy spread to an electron beam by a laser heater. The distribution of the induced energy spread greatly affects MBI suppression and can be controlled by shaping the transverse profile of the heater laser. Here, we present the first experimental demonstration of effective MBI suppression using a LG_{01} transverse laser mode and compare the improved results with respect to traditional Gaussian transverse laser mode at the Linac Coherent Light Source. The effects on MBI suppression are characterized by multiple downstream measurements, including longitudinal phase space analysis and coherent radiation spectroscopy. We also discuss the role of LG_{01} shaping in soft x-ray self-seeded FEL emission, one of the most advanced operation modes of a FEL for which controlled suppression of MBI is critical.

    View details for DOI 10.1103/PhysRevLett.124.134801

    View details for PubMedID 32302180

  • 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


    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

  • Phase-Stable Self-Modulation of an Electron Beam in a Magnetic Wiggler PHYSICAL REVIEW LETTERS MacArthur, J. P., Duris, J., Zhang, Z., Lutman, A., Zholents, A., Xu, X., Huang, Z., Marinelli, A. 2019; 123 (21)
  • Phase-Stable Self-Modulation of an Electron Beam in a Magnetic Wiggler. Physical review letters MacArthur, J. P., Duris, J. n., Zhang, Z. n., Lutman, A. n., Zholents, A. n., Xu, X. n., Huang, Z. n., Marinelli, A. n. 2019; 123 (21): 214801


    Electron beams with a sinusoidal energy modulation have the potential to emit subfemtosecond x-ray pulses in a free-electron laser. An energy modulation can be generated by overlapping a powerful infrared laser with an electron beam in a magnetic wiggler. We report on a new infrared source for this modulation, coherent radiation from the electron beam itself. In this self-modulation process, the current spike on the tail of the electron beam radiates coherently at the resonant wavelength of the wiggler, producing a six-period carrier-envelope-phase (CEP)-stable infrared field with gigawatt power. This field creates a few MeV, phase-stable modulation in the electron-beam core. The modulated electron beam is immediately useful for generating subfemtosecond x-ray pulses at any machine repetition rate, and the CEP-stable infrared field may find application as an experimental pump or timing diagnostic.

    View details for DOI 10.1103/PhysRevLett.123.214801

    View details for PubMedID 31809147

  • Laguerre-Gaussian Mode Laser Heater for Microbunching Instability Suppression in Free Electron Lasers Tang, J., Liu, W., Lemons, R., Vetter, S., Maxwell, T., Decker, F., Lutman, A., Krzywinski, J., Marcus, G., Moeller, S., Ratner, D., Huang, Z., Carbajo, S., IEEE IEEE. 2019
  • 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
  • Microbunch Rotation and Coherent Undulator Radiation from a Kicked Electron Beam PHYSICAL REVIEW X MacArthur, J. P., Lutman, A. A., Krzywinski, J., Huang, Z. 2018; 8 (4)
  • Laguerre-Gaussian and beamlet array as second generation laser heater profiles PHYSICAL REVIEW ACCELERATORS AND BEAMS Liebster, N., Tang, J., Ratner, D., Liu, W., Vetter, S., Huang, Z., Carbajo, S. 2018; 21 (9)
  • Characterizing isolated attosecond pulses with angular streaking OPTICS EXPRESS Li, S., Guo, Z., Coffee, R. N., Hegazy, K., Huang, Z., Natan, A., Osipov, T., Ray, D., Marinelli, A., Cryan, J. P. 2018; 26 (4): 4531–47


    We present a reconstruction algorithm for isolated attosecond pulses, which exploits the phase dependent energy modulation of a photoelectron ionized in the presence of a strong laser field. The energy modulation due to a circularly polarized laser field is manifest strongly in the angle-resolved photoelectron momentum distribution, allowing for complete reconstruction of the temporal and spectral profile of an attosecond burst. We show that this type of reconstruction algorithm is robust against counting noise and suitable for single-shot experiments. This algorithm holds potential for a variety of applications for attosecond pulse sources.

    View details for DOI 10.1364/OE.26.004531

    View details for Web of Science ID 000426268500073

    View details for PubMedID 29475303

  • Fresh-slice multicolour X-ray free-electron lasers NATURE PHOTONICS Lutman, A. A., Maxwell, T. J., MacArthur, J. P., Guetg, M. W., Berrah, N., Coffee, R. N., Ding, Y., Huang, Z., Marinelli, A., Moeller, S., Zemella, J. C. 2016; 10 (11): 745-750
  • Polarization control in an X-ray free-electron laser NATURE PHOTONICS Lutman, A. A., MacArthur, J. P., Ilchen, M., Lindahl, A. O., Buck, J., Coffee, R. N., Dakovski, G. L., Dammann, L., Ding, Y., Durr, H. A., Glaser, L., Grunert, J., Hartmann, G., Hartmann, N., Higley, D., Hirsch, K., Levashov, Y. I., Marinelli, A., Maxwell, T., Mitra, A., Moeller, S., Osipov, T., Peters, F., Planas, M., Shevchuk, I., Schlotter, W. F., Scholz, F., Seltmann, J., Viefhaus, J., Walter, P., Wolf, Z. R., Huang, Z., Nuhn, H. 2016; 10 (7): 468-472
  • Linac Coherent Light Source: The first five years REVIEWS OF MODERN PHYSICS Bostedt, C., Boutet, S., Fritz, D. M., Huang, Z., Lee, H. J., Lemke, H. T., Robert, A., Schlotter, W. F., Turner, J. J., Williams, G. J. 2016; 88 (1)
  • Analysis of shot noise suppression for electron beams PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS Ratner, D., Huang, Z., Stupakov, G. 2011; 14 (6)
  • Two-chicane compressed harmonic generation of soft x rays PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS Ratner, D., Chao, A., Huang, Z. 2011; 14 (2)
  • Analysis of slice transverse emittance evolution in a photocathode RF gun International Workshop on Frontiers in FEL Physics and Related Topics Huang, Z., Ding, Y., Qiang, J. ELSEVIER SCIENCE BV. 2008: 148–51
  • Analytical analysis of longitudinal space charge effects for a bunched beam with radial dependence PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS Wu, J., Huang, Z., Emma, P. 2008; 11 (4)
  • Statistical analysis of crossed undulator for polarization control in a self-amplified spontaneous emission free electron laser PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS Ding, Y., Huang, Z. 2008; 11 (3)
  • Review of x-ray free-electron laser theory PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS Huang, Z., Kim, K. 2007; 10 (3)
  • Optical klystron enhancement to self-amplified spontaneous emission free electron lasers PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS Ding, Y., Emma, P., Huang, Z., Kumar, V. 2006; 9 (7)
  • Fully coherent x-ray pulses from a regenerative-amplifier free-electron laser PHYSICAL REVIEW LETTERS Huang, Z. R., Ruth, R. D. 2006; 96 (14)


    We propose and analyze a regenerative-amplifier free-electron laser (FEL) to produce fully coherent, hard x-ray pulses. The method makes use of narrow-bandwidth Bragg crystals to form an x-ray feedback loop around a relatively short undulator. Self-amplified spontaneous emission (SASE) from the leading electron bunch in a bunch train is spectrally filtered by the Bragg reflectors and is brought back to the beginning of the undulator to interact repeatedly with subsequent bunches in the bunch train. The FEL interaction with these short bunches regeneratively amplifies the radiation intensity and broadens its spectrum, allowing for effective transmission of the x rays outside the crystal bandwidth. The spectral brightness of these x-ray pulses is about 2 to 3 orders of magnitude higher than that from a single-pass SASE FEL.

    View details for DOI 10.1103/PhysRevLett.96.144801

    View details for PubMedID 16712082