FORMATION DYNAMICS OF TRANSMISSION HOLOGRAMS IN LITHIUM NIOBATE CRYSTALS DOPED BY COPPER THROUGH HIGH-TEMPERATURE DIFFUSION

摘要

The results of experimental realization of the technology of diffusion doping of X-cut congruent lithium niobate crystals by copper and the results of studying their photorefractive and photovoltaic properties are presented. The latter was done by using the Bragg diffraction of the reading beam with a wavelength of 655 nm on the dynamic transmission volume-phase holograms recorded by laser beams having a wavelength of 532 nm. It is shown that by their photogalvanic properties the created samples, which are 1.8 mm thick, are similar to the single crystals grown by the conventional method from melt containing copper monooxide as a supplement.