Polarization specific features of light diffraction by holographic phase gratings in “reoksan” medium

The polarization and energy characteristics of diffracted zero- and first-order waves under Bragg diffraction of light on holographic phase gratings in a “reoksan” medium with a significant amplitude of the refractive index of the recording medium are theoretically investigated. It is founded that the reflection and transmission coefficients of diffracted waves for the $s$- and $p$-polarization of incident light experience significant changes when the refractive index of the layer is modulated. It is shown that under the conditions of Fresnel reflection of light waves from the boundaries of the modulated layer and the increase in the amplitude of the perturbation of the refractive index of the medium, there is a significant rotation of the polarization plane of the diffracted wave for the transmitted and reflected diffraction orders.