Self-Focusing and Stimulated Raman and Brillouin Scattering in Liquids

Abstract
Experimental results on the self-focusing of a laser beam in many liquids are reported. It is shown that the optical Kerr effect and electrostriction cannot explain the temperature variation of self-focusing in some liquids. Forward stimulated Brillouin scattering seems important in such cases. Measurements on the generation of stimulated Raman and Brillouin radiation in liquids are presented. The effect of selffocusing and self-trapping on the forward-backward asymmetry in the Stokes generation is discussed. Other qualitative features in the stimulated Raman and Brillouin scattering are explained.