Abstract
Self-focusing and self-defocusing of light in two-wave mixing are investigated experimentally. Amplification and self-focusing are measured as functions of the frequency shift between signal and pump beams. A frequency dependence is found in Kramers–Kronig form, as is plausible by the analogy of photorefractive amplification and laser amplification. Reversal of the external dc field on the material or a change in the frequency shift between the signal and pump beams is found to change self-focusing to self-defocusing.
© 1997 Optical Society of America
Full Article | PDF ArticleMore Like This
A. Brignon, I. Bongrand, B. Loiseaux, and J.-P. Huignard
Opt. Lett. 22(24) 1855-1857 (1997)
V. A. Kalinin, K. Shcherbin, L. Solymar, J. Takacs, and D. J. Webb
Opt. Lett. 22(24) 1852-1854 (1997)
O. Sandfuchs, J. Leonardy, F. Kaiser, and M. R. Belić
Opt. Lett. 22(8) 498-500 (1997)