The investigated functional materials make it possible to visualize, register, and digitize the volumetric picture of highly nonlinear interaction of light and matter. Using highly nonlinear photographs, including luminescent microtomograms, it is possible to reconstruct the configuration of intense light fields in self-action modes. Crystals with a wide band gap, in which the exciton mechanism of radiation-induced defect formation is realized, are investigated. The generated radiation defects are capable of photoluminescence, they are thermally and optically stable. These media are excellent materials for the manufacture of optical storage media in the form of images and in digital codes.
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