Av. Vershubskii et Vn. Parygin, ACOUSTOOPTIC INTERACTION OF WEAKLY DIVERGENT GAUSSIAN BEAMS IN STRONGLY ANISOTROPIC MEDIA, Acoustical physics, 44(1), 1998, pp. 23-28
Anisotropic acoustooptic diffraction of a bounded Gaussian beam is con
sidered in a three-dimensional setting with Bragg's diffraction. We de
rive a system of equations that relates the Fourier transforms of the
transmitted and diffracted light amplitudes and the sound beam propaga
ting in the anisotropic medium with a drift of acoustic energy. Simult
aneously, we take into account the anisotropic spread of the propagati
ng acoustic beam. Solving these equations subject to the respective bo
undary conditions, we obtain a formula for the relative magnitude of d
iffraction as a function of the drift angle and the divergence of the
acoustic beam in both planes. This formula is valid for any direction
of polarization of the incident and diffracted light beams.