Features of Using Multi-Element Converters in Anisotropic Acousto-Optic Bragg Cells
S. V. Zavarin, E. L. Nikishin
Saratov State Technical University
piezon@yandex.ru, nilel55@rambler.ru
Keywords: acousto-optic Bragg cell, anisotropic light diffraction, multi-element piezoelectric converter
Pages: 114-119
Abstract
The geometry of anisotropic light diffraction in ultrasound waves excited by a multi-element converter in an optically uniaxial negative crystal of lithium niobate is analyzed. An expression for the refractive index of a diffracted wave was found on the basis of a study of the optical indicatrices of the refractive indices of ordinary and extraordinary light waves in the crystal. A method for calculating the angular frequency characteristics of anisotropic acousto-optic Bragg cells with multi-element converters is proposed.
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