Relativistic self-focusing and its effect on stimulated Raman and stimulated Brillouin scattering in laser plasma interaction

Saleh T. Mahmoud, R. P. Sharma

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

This paper presents the effect of relativistic electron mass variation on a very high-power laser beam propagating in unmagnetized plasma. By choosing the laser beam and plasma parameters, the laser beam could be propagated without convergence or divergence (self-trapped mode). When the laser power exceeds the critical power, the laser beam can undergo periodic self-focusing due to relativistic nonlinearity. The stimulated Raman scattering (SRS) and stimulated Brillouin scattering (SBS) processes in the presence of this relativistic nonlinearity are discussed. The effect of finite laser beam size and that of scattered beam and relativistic self-focusing of the pump laser beam on SRS and SBS back-reflectivity have also been studied, including pump depletion.

Original languageEnglish
Pages (from-to)3419-3426
Number of pages8
JournalPhysics of Plasmas
Volume8
Issue number7
DOIs
Publication statusPublished - Jul 2001
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics

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