The effect of a position-dependent time constant on nondegenerate photorefractive two-wave mixing is analyzed. For codirectional two-wave mixing the results indicate that the bandwidth of the two-wave-mixing gain decreases when the medium becomes lossy and that the photorefractive phase shift depends on the loss of the medium. In contradirectional two-wave mixing the total local intensity strongly depends on the coupling even if the medium is lossless. Thus the bandwidth is dependent on the energy coupling.
© 1992 Optical Society of America
Original Manuscript: October 16, 1991
Revised Manuscript: April 20, 1992
Published: September 1, 1992
Li-Kuo Dai, Claire Gu, and Pochi Yeh, "Effect of position-dependent time constant on photorefractive two-wave mixing," J. Opt. Soc. Am. B 9, 1693-1697 (1992)