Abstract

The power dependence of an induced, nonlinear thermal-grating signal for different dye solutions is measured using a polarization-spectroscopy scheme. It is shown that the dependence is cubic at low power, but it becomes exponential when the light power is increased. The results are interpreted as the optical amplification of the thermal-grating signal due to positive values of the electronic nonlinear absorption.

© 1988 Optical Society of America

Pump-power dependences of thermal-grating and electronic components of a polarization spectroscopy signal from dye solutions

A. Marcano O., F. García–Golding, and R. Rojas F.
J. Opt. Soc. Am. B 3(1) 3-7 (1986)

Low-power (10.6-μm) laser-beam amplification by thermal-grating-mediated degenerate four-wave mixing in a nematic liquid-crystal film

I. C. Khoo, P. Y. Yan, G. M. Finn, T. H. Liu, and R. R. Michael
J. Opt. Soc. Am. B 5(2) 202-206 (1988)

Electronic and nuclear contributions to the third-order nonlinear optical susceptibilities of new p-N, N^?-dimethylaniline tetrathiafulvalene derivatives

B. Sahraoui, X. Nguyen Phu, M. Sallé, and A. Gorgues
Opt. Lett. 23(23) 1811-1813 (1998)

Optical amplification of a thermal-grating polarization-spectroscopy signal: errata

A. Marcano O. and R. Medina
J. Opt. Soc. Am. B 6(2) 267-267 (1989)

Optical parametric processes in isotropic third-order nonlinear media with magneto-optic properties

Valerio Pruneri and Stefano Longhi
Opt. Lett. 25(23) 1720-1722 (2000)