The XIII International Youth Scientific School "The Coherent Optics and Optical Spectroscopy"

Light diffraction on slanted phase gratings in anisotropic medium

A. S. Voloshin, V. I. Balakshy

M. V. Lomonosov Moscow State University, Faculty of Physics

Abstract: The peculiarities of the Bragg diffraction of light on a sinusoidal phase grating created in anisotropic medium by an acoustic wave were studied for the case of great acoustic energy walk-off. The modified equations of coupled waves were derived, which allowed to calculate frequency and angular characteristics of anisotropic diffraction in a paratellurite crystal. It is shown that the acoustic beam walk-off changes essentially the angular and frequency ranges of acousto-optic interaction.

Keywords: diffraction, slanted phase gratings, anisotropic medium, acousto-optic interaction.

UDC: 535.241.13

Received: 25.12.2009