NONRECIPROCAL OPTICAL EFFECTS IN ANISOTRO PIC DIFFRACTION BY A TRAVELING ULTRASONIC WAVE

A theoretical investigation is made of the characteristic features of acousto-optical nonreciprocal effects in anisotropic Bragg diffraction by travelling ultrasonic waves. It is shown that wide-aperture nonrec iprocal acousto-optical devices can be constructed from wide-aperture acoustooptical modulators. The conditions are established for complete elimination of the amplitude and phase nonreciprocities of acoustoopt ical devices in the case of double anisotropic diffraction of counterp ropagating optical waves.