Backward Raman amplification in a partially ionized gas

A. A. Balakin, G. M. Fraiman, N. J. Fisch, S. Suckewer

Research output: Contribution to journalArticle

17 Scopus citations

Abstract

Compressing laser pulses to extremely high intensities through backward Raman amplification might be accomplished in a plasma medium. While the theory is relatively straightforward for homogeneous fully ionized plasma, a number of important effects enter when the plasma is not fully ionized. In particular, when a mixture of gases is employed to accomplish the coupling, there can be several thresholds for incremental ionization. The refraction of both the pump and the seed is then strongly affected by the plasma ionization. Moreover, in the case of Raman backscattering in partially ionized plasma, the degree of plasma ionization is particularly sensitive to the counterpropagating geometry. This idea is examined in light of data for a recent experiment on a Raman amplifier.

Original languageEnglish (US)
Article number036401
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume72
Issue number3
DOIs
StatePublished - Sep 1 2005

All Science Journal Classification (ASJC) codes

  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • Condensed Matter Physics

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