Abstract

Forward Stimulated Brillouin Scattering (SBS) is one of the causes of increasing divergence of the beams in laser nuclear fusion devices with intensities more than 10¹³ W/cm² [1]. Thresholds for producing acoustic oscillations in the amplifier rods transverse to the incident beam can be calculated for such values of intensities. So forward SBS can be sufficient for wave front disturbance which leads to increasing their divergence. A condition for the occurrence of the SBS is resonance for stimulated sound waves in the acoustic resonators [2] on the path of the beam.

© 1996 IEEE