Modification of stimulated Brillouin scattering due to magnetic anisotropy in laser–plasma interaction

Laser plasma experiments reveal rich interplay between laser plasma instabilities. The growth of stimulated Brillouin scattering (SBS) is one of the most significant constraints of laser fusion experiments. In this paper, a mechanism of stabilization of SBS process due to magnetic anisotropy has been presented. Magnetic anisotropy induced by the temporally exponentially growing nonoscillating magnetic moment from inverse Faraday effect (IFE) has been studied. It has been shown that for interaction of Nd laser (A = 1.06 μm) on solid deuterium target the SBS growth rate (γ) ∼ 3.45 ps and the phase velocities of the incident and scattered electromagnetic (EM) waves have been shown to decay exponentially (∼e -γt ) in this SBS process resulting in wave-number mismatch.