Thermally Induced Scattering of Radiation in Laser Ceramics with Arbitrary Grain Size

摘要

Thermally induced beam distortions in laser ceramics with arbitrary grain size have been investigated. A model for the spatial spectral density of dielectric permeability variations was suggested. The average scattered intensity was carried out using the small disturbances method. The directional pattern of the scattered field and the extinction coefficient have been obtained. The scattered power and the depolarization ratio fit with the corresponding values obtained in the geometrical optics approximation in the range of its validity.