Nonreciprocal acoustooptic effects in crystals with complex anisotropy

It has been shown that application of cubic gyrotropic crystals permits to extend functional opportunities of nonreciprocal elements on their base at the expense of receipt no one but two regions with essential value of phase nonreciprocity. It has been established that cubic centrally symmetric crystals with electroinduced anisotropy may be used while creating nonreciprocal elements which are controled by electric field and polarization of the incident light. It has been grounded that anisotropic Bragg diffraction in biaxial crystals may be applied by elaboration of pure phase large-aperture nonreciprocal systems where it may be achieved the absolute absence of diffractional losses. It has been shown the opportunity of application of the double Bragg diffraction in uniaxial gyrotropic crystals (for example, paratellurite) near optic axis while creating pure reciprocal systems which are necessary for ring laser with mode synchronization.