Influence of the scattering matrix elements on the gain of stokes and anti-Stokes components in the nonstationary regime

The influence of the scattering matrix elements that are responsible for th e amplification of the Stokes and anti-Stokes components on the process of stimulated Raman scattering in the essentially nonstationary regime is anal yzed. it is demonstrated that the optimum proportion between the scattering matrix elements, which maximizes the anti-Stokes component, is determined by the ratio between the optical frequencies of the components and the init ial proportion between the intensities of the pump and initiating pulses. I n the case of the optimum proportion between the scattering matrix elements , the variation in the excitation of a medium compensates the self-induced modulation of gain, and the efficiency of converting the radiation energy i nto the Stokes and anti-Stokes components increases substantially. (C) 2001 MAIK "Nauka/Interperiodica".