Experimental and theoretical study of stimulated Raman scattering indicatrix asymmetry

Abstract

The paper provides experimental and theoretical results of stimulated Raman \nscattering Stokes component indicatrix asymmetry study. Theoretical results demonstrate \nthat asymmetry is caused by influence of Stokes/anti-Stokes parametric processes. \nStokes/anti-Stokes parametric process provides additional photons to the forward Stokes \ncomponent. This excess of photons compared to a backward Stokes component increases \ndue to combinational mechanism of stimulated scattering during further propagation of \nwaves along the medium. Thus, under competition of forward and backward Stokes \ncomponents generation, the process of forward stimulated Raman scattering takes \nsignificant advantage. Obtained in this paper is satisfactory matching between theoretical \ncalculations and experimental results for benzene under excitation by laser pulses with \nthe duration 25 ns and wavelength 694.3 nm.