SPECTRUM OF THE AMPLIFIED RAMAN SCATTERING A GAUSSIAN LIGHT BEAM
It is shown that effects of the light-induced focusing of low-frequency Raman scattering (RS) components and defocusing of high-frequency ones in the field of a Gaussian exciting beam lead to a weak shift of the amplified RS line towards low frequencies. An effective algorithm is suggested and justified which enables one to calculate the average power of the amplified RS on the basis of numerical solving the wave aquation for the Stokes beam field developing from spontaneous RS.