The results of the observation and investigation of the light-induced photorefractive effect, which arises by the action of the powerful two-component laser radiation on volumetric isotropic medium, are discussed. It is shown, that the lightinduced photorefractive grating can be created by powerful light in some isotropic silicate glass materials in which the sufficiently effective diffraction of radiation is observed by that. The theoretical calculations and experimental results of the investigation of the diffraction of radiation on the light-induced photorefractive gratings in volumetric glass mediums are presented and the observed characteristic peculiarities are analyzed.
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