Abstract
Diffraction in the isotropic material of an acoustooptic elements with weak light-wave and acoustic-wave interaction is examined. It is found that under certain diffraction conditions under a wide range of canning angles, the intensity of the first maximum rises smoothly with deflection in either direction from the center position, which differs appreciably from the Bragg angle. This is known as diffraction antiselectivity. The application value of the results is the possibility of wide-aperture scanning with a large number of elements in a scanning line with lowered requirements on the divergence and monochromatism of the laser radiation.
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