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Characteristic properties of diffraction spectra variations of light interacting with the thick acoustic grating

The theoretical analysis has been developed for the diffraction spectrum at the normal incidence of a plane light wave onto a sound wave in an isotropic medium. In the framework of the bound waves pattern, the diffraction spectrum behavior was investigated. Parameters of the sound wave such as a width and intensity of the sound beam are variable. As a result, it was shown that the dependence of the diffraction maximums' magnitude on the sound intensity is essentially modified with increase of the acousto-optic layer width even at the orthogonal orientation of interacting fields.