Production of low stress non-(111) oriented large volume single crystals with low stress related birefringence and homogenous refractive index, as well as their application

摘要

it is a method for producing or not 111 oriented, gleitebenen broken smooth, large crystals with low spannungsdoppelbrechung and homogenous refractive index is described.the procedure consists of a kristalles breed and annealing under relaxation of tension along its gleitebenen forms of heat in a temperature gradient in the training, and the direction of the heat annealing and / or in cooling the heat of a richtu ng is the gleitebenen an angle of 5 - 90 degrees).with this method, crystals with a homogeneous refractive index of & 0.025 x 10 - 6 (rms value).