Abstract

Using the so-called ac field technique, we investigate experimentally the influence of optical beam coupling on the generation of subharmonic gratings in a photorefractive sillenite crystal. By the use of two different recording configurations, we are able to distinguish between effects caused by material nonlinearities and effects caused by optical beam coupling.

© 1998 Optical Society of America

Influence of beam-coupling on photorefractive parametric oscillation in a dc-field-biased Bi₁₂SiO₂₀ crystal

Henrik C. Pedersen, D. J. Webb, and Per M. Johansen
J. Opt. Soc. Am. B 15(9) 2439-2445 (1998)

Investigation of photorefractive subharmonics in the absence of wave mixing

B. I. Sturman, T. E. McClelland, D. J. Webb, E. Shamonina, and K. H. Ringhofer
J. Opt. Soc. Am. B 12(9) 1621-1627 (1995)

Ac square-wave field-induced subharmonics in photorefractive sillenite: threshold for excitation by inclusion of higher harmonics

Per M. Johansen, Henrik C. Pedersen, Evgeny V. Podivilov, and Boris I. Sturman
J. Opt. Soc. Am. B 16(1) 103-110 (1999)

Parametric generation of a spatial subharmonic grating in photorefractive crystals: theory

O. P. Nestiorkin and Ye. P. Shershakov
J. Opt. Soc. Am. B 10(10) 1907-1918 (1993)

Parametric oscillation in photorefractive media

Henrik C. Pedersen and Per Michael Johansen
J. Opt. Soc. Am. B 12(6) 1065-1073 (1995)