Onset of self-steepening of intense laser pulses in plasmas

Details Onset of self-steepening of intense laser pulses in plasmas Onset of self-steepening of intense laser pulses in plasmas

Apr 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010njph...12d5025v&link_type=abstract

New Journal of Physics, Volume 12, Issue 4, pp. 045025 (2010).

Physics

4

Scientific paper

The self-steepening of laser pulses with intensities in excess of 1018 W cm-2 and with typical durations shorter than 30 fs propagating in underdense plasmas is examined by resorting to the framework of photon kinetics. Thresholds for self-steepening at the back/front of short laser pulses are determined, along with the self-steepening rates, and the connection between self-steepening, self-compression and frequency chirps is established. Our results are illustrated with particle-in-cell simulations, revealing the key physical mechanisms associated with the longitudinal laser dynamics, critical for the propagation of intense laser pulses in underdense plasmas.

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