High-Order Diffraction Due to Two-Beam Mixing in Photorefractive SBN:Ce

Abstract

Experimental observation of high-order diffraction in photorefractive SBN:Ce is reported. When two beams of nearly equal intensity are crossed in the crystal at a small angle (<1°) the transmitted beam contains many diffracted orders. Results are compared to thin grating scattering theory (i.e. Raman-Nath scattering).