Superradiant amplification of an ultrashort laser pulse in a plasma by a counterpropagating pump

G. Shvets, N. J. Fisch, A. Pukhov, J. Meyer-Ter-Vehn

Research output: Contribution to journalArticle

194 Scopus citations

Abstract

AAn initially short (< 1/ωp) laser pulse can be superradiantly amplified by a counterpropagating long low-intensity pump while remaining ultrashort. This superradiant amplification occurs if the frequency of the pulse is lower than that of the pump, and the initial pulse intensity is sufficiently high. Numerical simulations indicate that the short pulse can be amplified to an intensity hundreds of times the pump intensity, with the pump depletion as high as 40%. This implies that the long pump is efficiently time compressed without frequency chirping and pulse stretching, making the superradiant amplification an interesting alternative to chirped-pulse amplification.

Original languageEnglish (US)
Pages (from-to)4879-4882
Number of pages4
JournalPhysical review letters
Volume81
Issue number22
DOIs
StatePublished - Jan 1 1998

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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