Light Scattering from Polaritons in GaP Crystals

The theory of polariton scattering on stimulated Raman scattering and of coherent anti-Stokes scattering of light in dispersing and dissipative media has been developed in the approximation of a constant intensity which takes into account the reverse influence of excited waves on exciting ones and makes it possible to simultaneously consider the phase difference and decay of all interacting waves. It has been established that, unlike a constant-field approximation, the complex amplitude of the Stokes wave depends on the intensity of the polariton one and vice versa. A comparison of the behavior of the polariton-wave intensity for a GaP crystal in both approximations has been carried out.