Diffraction properties of photorefractive gratings

Ragini Saxena

doi:10.1117/12.178626

28 April 1994 Diffraction properties of photorefractive gratings

Ragini Saxena

Proceedings Volume 10270, Photorefractive Materials, Effects, and Applications: A Critical Review; 1027004 (1994) https://doi.org/10.1117/12.178626
Event: SPIE's 1993 International Symposium on Optics, Imaging, and Instrumentation, 1993, San Diego, CA, United States

Abstract

Volume phase gratings in photorefractive crystals have nonuniform amplitude and phase due to the energy exchanged by the writing beams within the material. Analytic expression is obtained for the diffraction efficiency of a weak reading beam that does not perturb the grating and has a different polarization from the write beams. For a read beam of arbitrary intensity, the diffraction efficiency is a nonlinear function of the read beam intensity and is nonreciprocal with respect to readout from the two input ports. These properties of photorefractive gratings are studied for arbitrary phase shifts of the index grating from the intensity pattern.

Citation Download Citation

Ragini Saxena "Diffraction properties of photorefractive gratings", Proc. SPIE 10270, Photorefractive Materials, Effects, and Applications: A Critical Review, 1027004 (28 April 1994); https://doi.org/10.1117/12.178626

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