Abstract

Photogalvanic holographic gratings were recorded in the photorefractive crystal Sr_0.39Ba_0.61Nb₂O₆ : Ce (0.05 weight %) by HeNe laser (λ=0.633m). When holographic grating vector was prpendicular to the $\overrightarrow{\text{c}}$ axis hologram writing with orthogonally polarized waves were realized with diffraction efficiency of 6% (for thickness 1.0 mm). Intermode scattering [11 was observed in accordance to calculations and photoinduced holographic electric field was estimated to be about 600 V/cm. Photogalvanic holographic grating, recorded with orthogonally polarized waves may be used for phase conjugation with polarization restoration [2,3], and for processing of laser beams.

© 1991 Optical Society of America