Determination of photoelectric fields in a Lithium Niobate crystal by parameters of indicatrix of photoinduced scattered radiation

Abstract

By indicatrix parameters’ of photoinduced light scattering (PLS) photovoltaic and diffusion fields in Lithium Niobate crystals of different composition are determined. It is shown that stoichiometric crystals grown from a melt of 58.6mol.% Li2O possess high photorefractive properties in comparison with crystals of congruent composition when using He–Ne laser with power of 60mW opening good opportunities for using them as materials for optoelectronics.