Saturation of the leading spike growth in backward Raman amplifiers

V. M. Malkin, Z. Toroker, N. J. Fisch

Research output: Contribution to journalArticle

22 Scopus citations

Abstract

Backward Raman amplification of laser pulses in plasmas can produce nearly relativistic unfocused output intensities and multi-exawatt powers in compact devices. The largest achievable intensity depends on which of major competitive processes set this limit. It is shown here that the relativistic electron nonlinearity can cause saturation of the leading amplified spike intensity before filamentation instabilities develop. A simple analytical model for the saturation, which supports numerical simulations, is suggested. The upper limit for the leading output spike unfocused intensity is calculated.

Original languageEnglish (US)
Article number093112
JournalPhysics of Plasmas
Volume21
Issue number9
DOIs
StatePublished - Sep 1 2014

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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