Kinky beam paths inside photorefractive crystals
- 1 October 1993
- journal article
- Published by Optica Publishing Group in Journal of the Optical Society of America B
- Vol. 10 (10) , 1901-1906
- https://doi.org/10.1364/josab.10.001901
Abstract
Beam paths inside photorefractive crystals under conditions of beam fanning or self-pumped conjugation that uses crystal corners are often kinky-i.e., they consist of short, straight line segments as opposed to smoothly curved paths. We show that kinky paths occur naturally when the beam-coupling equations including noise source terms are solved to all Bragg orders without phase-matching approximations. Higher-order gratings arise in high-gain two-wave mixing without noise but are apparently unobservable because fanning always dominates in real crystals. In the presence of noise and fanning the residual signature of the higher-order gratings is kinky beam paths.Keywords
This publication has 9 references indexed in Scilit:
- Self-bending of light beams in photorefractive phase conjugatorsJournal of the Optical Society of America B, 1992
- Nonlinear multi two-wave mixing, the fanning process and its bleaching in photorefractive mediaOptics Communications, 1990
- Observations of internal beam production in barium titanate phase conjugatorsJournal of the Optical Society of America B, 1988
- Observations on centrosymmetric and asymmetric scattering in barium titanateJournal of the Optical Society of America B, 1988
- Time response of a cerium-doped Sr_075Ba_025Nb_2O_6 self-pumped phase-conjugate mirrorOptics Letters, 1987
- Bistability and noncommutative behavior of multiple-beam self-pulsing and self-pumping in BaTiO_3Optics Letters, 1987
- Self-pumped, continuous-wave phase conjugator using internal reflectionOptics Letters, 1982
- Asymmetric self-defocusing of an optical beam from the photorefractive effectJournal of the Optical Society of America, 1982
- Barium-strontium mobate crystals for optical information recordingPhysica Status Solidi (a), 1981