Extended Propagation of Powerful Laser Pulses in Focusing Kerr Media

V. M. Malkin, N. J. Fisch

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

Powerful incoherent laser pulses can propagate in focusing Kerr media much longer distances than can coherent pulses, due to the fast phase mixing that prevents transverse filamentation. This distance is limited by 4-wave scattering, which accumulates waves at small transverse wave numbers, where phase mixing is too slow to retain the incoherence and thus prevent the filamentation. However, we identify how this theoretical limit can be overcome by countering this accumulation through transverse heating of the pulse by random fluctuations of the refractive index. Thus, the laser pulse propagation distances are significantly extended, making feasible, in particular, the generation of unprecedentedly intense and powerful short laser pulses in a plasma by means of backward Raman amplification in new random laser regimes.

Original languageEnglish (US)
Article number133901
JournalPhysical review letters
Volume117
Issue number13
DOIs
StatePublished - Sep 20 2016

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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