Strong Damping of Stimulated Brillouin Scattering in Cavity-Structured Targets

Abstract
With use of a large green laser system (5 kJ, 500 psec, ten beams), scattered light from cavity and cannonball targets (1500 μm diam) is investigated. Strong suppression of stimulated Brillouin scattering is observed for the cavity target, while weak to modest suppression of stimulated Brillouin scattering is measured for the cannonball targets. The observed damping is attributed to sudden temperature rise due to collisions of two plasmas in the cavity.