Nonlinear coupling of stimulated Raman and Brillouin scattering in laser-plasma interactions

Details Nonlinear coupling of stimulated Raman and Brillouin scattering in laser-plasma interactions Nonlinear coupling of stimulated Raman and Brillouin scattering in laser-plasma interactions

Jun 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987phrvl..58.2547r&link_type=abstract

Physical Review Letters (ISSN 0031-9007), vol. 58, June 15, 1987, p. 2547-2550. DOE-Navy-supported research.

Physics

Optics

62

Brillouin Zones, Laser Plasma Interactions, Nonlinear Optics, Optical Coupling, Raman Spectra, Electron Density Profiles, Normal Density Functions, Plasma Turbulence

Scientific paper

A theory of the coupling of stimulated Raman scattering (SRS) and stimulated Brillouin scattering (SBS) is presented which incorporates the nonlinear physics of the Zakharov (1972) model, and good agreement with the experiments of Walsh et al. (1984) is found. The present work differs from previous work in the presentation of calculations for finite slab geometry. Nonlinear saturation is found to occur before the system reaches the linear asymptotic regime usually associated with absolute instability. It is shown that the competition between SRS and SBS is controlled by the ratio of the actual SRS and SBS growth rates, gamma(R)/gamma(B).

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