Observation of steepening in electron plasma waves driven by stimulated Raman backscattering
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TL;DR
Harmonics of plasma waves excited by CO/sub 2/-laser--induced stimulated Raman scattering have been observed by frequency- and wave-number-resolved ruby Thomson scattering and their relative amplitudes agreed with predictions of nonlinear warm-plasma wave-steepening theory.
Abstract
Harmonics of plasma waves excited by ${\mathrm{CO}}_{2}$-laser--induced stimulated Raman scattering have been observed by frequency- and wave-number-resolved ruby Thomson scattering. Measurements of their relative amplitudes agreed with predictions of nonlinear warm-plasma wave-steepening theory up to the maximum observed amplitude of the fundamental component, n${\ifmmode \tilde{}\else \~{}\fi{}}_{1}$/${n}_{0}$=16%.