Nonlinear high-order effects in stimulated Raman scattering spectrum

Abstract A dependence of the stimulated Raman scattering (SRS) of water solutions of HNO 3 on the pumping level has been studied. The lines of the fourth and higher order effects were found. The results are treated in the basis of a spectrally uniform model of radiation centres and dependence of the coefficients of nonlinear susceptibility on the pumping.