Acoustoptic Diffraction of Two-Color Radiation at the Limit Frequency of an Acoustic Wave

A method is proposed that allows one to provide high-performance acousto-optic (AO) Bragg diffraction of two-color optical radiation at the highest possible frequency of a sound wave. The method is based on the use of AO cells together with a prism, with which two-color radiation is diluted at the required angle. The method is demonstrated based on the example of AO diffraction of a two-color Ar-laser radiation, which diffracts in a paratellurite crystal at the maximum possible frequency of a transverse "slow" sound wave, equal to similar to 200 MHz.