Experimental study of the first-order spatiotemporal couplings effect in laser plasma accelerators

ORAL

Abstract

Laser plasma accelerators can produce electron beams with energies of multi GeV level [1], which attracts a variety of applications including high-energy physics and drivers for light sources. However, the beam quality has to be improved for most applications. Among parameters to affect beam quality, spatiotemporal couplings (STCs) of the laser pulse can be an important effect. With the first-order STCs [2], laser pulse can have pulse front tilt (PFT), which exhibits dynamic behavior near focus [3]. We have investigated the effect of PFT on electron beam steering experimentally using the BELLA petawatt laser at the Lawrence Berkeley National Lab. While previous studies were focused on the near-field angular dispersion effect [4], we show for the first time the effect of temporal chirp combined with the near-field angular dispersion.

[1] W. Leemans et al., PRL 113 (2014) 245002.

[2] S. Akturk et al., Opt. Exp., 13 (2005) 8642.

[3] K. Nakamura et al., IEEE J. Quantm. Electron. 53 (2017) 1200121.

[4] A. Popp et al., PRL 105 (2010) 215001.

*This work was supported by the U.S. Department of Energy Office of Science Offices of High Energy Physics, under Contract No. DE-AC02-05CH11231. The work of D. M. was supported by the National Science Foundation, under Grant No. PHY-1415596.

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Presenters

  • Kei Nakamura

    • Lawrence Berkeley Natl Lab
    • LBNL

Authors

  • Kei Nakamura

    • Lawrence Berkeley Natl Lab
    • LBNL

  • Maxence Thévenet

    • Lawrence Berkeley Natl Lab

  • Daniel Mittelberger

    • Lawrence Livermore Natl Lab
    • Lawrence Berkeley Natl Lab, Lawrence Livermore Natl Lab

  • Anthony J Gonsalves

    • Lawrence Berkeley Natl Lab
    • Lawrence Berkeley National Laboratory, USA
    • LBNL

  • Sven Steinke

    • Lawrence Berkeley Natl Lab

  • Carlo Benedetti

    • Lawrence Berkeley Natl Lab
    • Lawrence Berkeley National Laboratory, USA

  • R. Lehe

    • Lawrence Berkeley Natl Lab
    • LBNL

  • Jean-Luc Vay

    • Lawrence Berkeley Natl Lab

  • Wim Pieter Leemans

    • Lawrence Berkeley Natl Lab
    • Lawrence Berkeley National Laboratory, USA
    • Lawrence Berkeley Natl Lab, U.C. Berkeley
    • Lawrence Berkeley Natl Lab, Univ of California - Berkeley
    • LBNL, UC Berkeley