Anisotropic Bragg diffraction of light on holographic phase gratings under Fresnel reflection conditions

The energy coefficients of reflection and transmission of zero- and first-order diffracted waves with anisotropic Bragg diffraction by holographic phase gratings in cubic non-centrosymmetric crystals under Fresnel reflection conditions are theoretically investigated. It is established that at significant values of the amplitude of the perturbation of the refractive index of the medium, there is a high amplitude modulation of light in the transmitted and reflected diffraction orders. It is shown, that significant periodic changes in the transmission coefficients of diffracted waves of the zero and first orders with a change in the azimuth of polarization of incident light are determined by a significant difference in the Fresnel reflection coefficients at the layer boundaries for the $s$- and $p$-components of incident light.