Coherent ultra-broadband laser-assisted injection radiation in a laser plasma accelerator

POSTER

Abstract

Electron self-injection in self-modulated laser wakefield accelerator is observed to generate an intense coherent ultra-broadband and ultrashort radiation flash, consistent with the acceleration of electrons from nearly rest to almost the speed of light in a distance ~1µm [1]. We present measurements of the flash spectra, spectral coherence, pulse duration, polarization and angular distribution. These are characteristic of laser-assisted injection of off-axis electrons, which does not induce wave-breaking and preserves wake coherence.

[1] Goers, A. J., et al. "Multi-MeV electron acceleration by subterawatt laser pulses." Physical review letters 115.19 (2015): 194802.

*This work is supported by the US Department of Energy, the National Science Foundation, and the Air Force Office of Scientific Research.

Presenters

  • Bo Miao

    • Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, Maryland 20742, USA

Authors

  • Bo Miao

    • Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, Maryland 20742, USA

  • Linus Feder

    • Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, Maryland 20742, USA

  • Jared K Wahlstrand

    • Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, Maryland 20742, USA, Engineering Physics Division, National Institute of Stan

  • Andrew J Goers

    • Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, Maryland 20742, USA

  • George A Hine

    • Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, Maryland 20742, USA

  • Fatholah Salehi

    • Univ of Maryland-College Park
    • Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, Maryland 20742, USA

  • Howard Michael Milchberg

    • Univ of Maryland-College Park
    • Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, Maryland 20742, USA