Abstract

A new mechanism for enhancing the photorefractive grating amplitude in Bi₁₂SiO₂₀ is presented. We show experimentally that, by recording two photorefractive running gratings induced by two pairs of mutually incoherent laser beams, it is possible for the two gratings to transfer energy from one to the other. As might be expected, maximum energy transfer is obtained when the phase velocities of the two gratings are equal.

© 1995 Optical Society of America

Observation of spontaneously frequency-shifted beam fanning in photorefractive Bi₁₂SiO₂₀

Henrik C. Pedersen, Peter E. Andersen, and Per Michael Johansen
Opt. Lett. 20(24) 2475-2477 (1995)

Collinear Bragg diffraction in photorefractive Bi₁₂SiO₂₀

J. P. Huignard and B. Ledu
Opt. Lett. 7(7) 310-312 (1982)

Effect of subharmonics on two-wave gain in Bi₁₂SiO₂₀ under alternating electric fields

A. Grunnet-Jepsen, L. Solymar, and C. H. Kwak
Opt. Lett. 19(17) 1299-1301 (1994)

Experimental evidence of modulation instability in a photorefractive Bi₁₂TiO₂₀ crystal

M. D. Iturbe-Castillo, M. Torres-Cisneros, J. J. Sánchez-Mondragón, S. Chávez-Cerda, S. I. Stepanov, V. A. Vysloukh, and G. E. Torres-Cisneros
Opt. Lett. 20(18) 1853-1855 (1995)

High-fidelity image amplification and phase conjugation in photorefractive Bi₁₂SiO₂₀ crystals

N. A. Vainos and M. C. Gower
Opt. Lett. 16(6) 363-365 (1991)