Abstract

A numerical simulation for studying the kinetics of phase-conjugate beams generated by multigrating four-wave mixing has been developed. It has been applied to investigate the four-wave mixing process in ${\mathrm{BaTiO}}_3$ by use of realistic coupling coefficients. The role of the distinct gratings has been analyzed. Depending on the experimental conditions, constructive as well as destructive interference of the different contributions was obtained. Moreover, because of grating competition effects, π-phase changes in the phase-conjugate beam can occur during the kinetics. For large values of the coupling strength and specific regions of the physical parameters, unstable four-wave mixing dynamics were obtained. The analysis of the results provides some criteria for predicting the phase conjugator’s behavior in multigrating conditions.

© 1998 Optical Society of America

Reflectivity of photorefractive cross-polarized four-wave mixing in consideration of pump depletion

Hisashi Matsuoka, Atsushi Okamoto, Mototsugu Takamura, and Kunihiro Sato
J. Opt. Soc. Am. B 15(5) 1545-1552 (1998)

Multigrating phase conjugation: chaotic results

M. R. Beić, D. Timotijević, and W. Krolikowski
J. Opt. Soc. Am. B 8(8) 1723-1731 (1991)

Multigrating competition effects in photorefractive mutually pumped phase conjugation

Q. Byron He, Pochi Yeh, Claire Gu, and Ratnakar R. Neurgaonkar
J. Opt. Soc. Am. B 9(1) 114-120 (1992)

Self-oscillation in a photorefractive phase-conjugate mirror with linear absorption. II. Anisotropic four-wave mixing

N. C. Kothari
J. Opt. Soc. Am. B 13(10) 2320-2325 (1996)

Self-pumped phase-conjugate resonator with two-pass four-wave mixing in a diode-pumped Nd:YAG amplifier

Pierre Sillard and Arnaud Brignon
J. Opt. Soc. Am. B 15(12) 2917-2928 (1998)