Abstract

The nonlinear problem of speckle-beam propagation in a photorefractive crystal with a strong diffusion-grating response has been solved. The approximate self-sustaining solution has been found that conserves the Gaussian shape of an angular spectrum of the beam but gradually tilts its propagation direction. The rate of angular tilting is proportional to the square of the beam’s angular divergence and depends on the crystal-axis orientation.

© 1994 Optical Society of America

Self-bending of light beams in photorefractive phase conjugators

V. V. Eliseev, A. A. Zozulya, G. D. Bacher, and Jack Feinberg
J. Opt. Soc. Am. B 9(3) 398-404 (1992)

Backward beam fanning in photorefractive crystals

Ping Xie, Peng-Ye Wang, Jian-Hua Dai, and Hong-Jun Zhang
J. Opt. Soc. Am. B 15(5) 1521-1527 (1998)

Compression, self-bending, and collapse of Gaussian beams in photorefractive crystals

D. N. Christodoulides and M. I. Carvalho
Opt. Lett. 19(21) 1714-1716 (1994)

Dynamics of multiple two-wave mixing and fanning in photorefractive materials

Michael Snowbell, Moshe Horowitz, and Baruch Fischer
J. Opt. Soc. Am. B 11(10) 1972-1982 (1994)

New time-dependent photorefractive three-dimensional model: application to self-trapped beam with large bending

Fabrice Devaux, Virginie Coda, Mathieu Chauvet, and Rémy Passier
J. Opt. Soc. Am. B 25(6) 1081-1086 (2008)