Photoinduced light scattering in cerium-doped barium strontium niobate crystals

Photoinduced light scattering was observed in cerium-doped $(Sr_xBa_{1-x})_{1-y}\times(Nb_2O_6)_y$, crystals having the composition $x=0,61$, $y=0,4993$. It was found that this effect is due to holographic amplification of light scattered by crystal defects. An analysis is made of static and dynamic characteristics of self-amplification of scattered light in the crystals. A theoretical model of the process is constructed assuming that the hologram recording process is of the diffusion type. Theoretical results are compared with the experiment.