Stimulated antistokes Raman emission spectrum from a movable focal region under self focusing

Abstract

It is shown that the motion of a focal region in self-focusing liquids changes the radiation frequency of an anti-Stokes component of stimulated Raman scattering. The displacement of the anti-Stokes component frequency relatively to an exact Raman resonance is due to the implementation of amplitude-phase matching conditions, namely, the phase coordination has to carry out in the vicinity of the moving point where the amplitude of polarization has a maximum.