Two-wave mixing absorption in a supersonic beam containing I2 has been studied. The results are in agreement with theory for probe intensities comparable with the pump intensity. However, at very low probe-beam intensities, the absorption deviates substantially from the predicted value and becomes the same as that for the pump beam alone. We believe that this behavior is caused by density variations in the molecular beam and suggest that this effect can be developed into a tool for probing optical inhomogeneities on a microscopic scale.
© 1987 Optical Society of America
Original Manuscript: February 13, 1987
Manuscript Accepted: May 18, 1987
Published: August 1, 1987
G. S. He, J. W. Mirick, R. S. F. Chang, and N. Djeu, "Intensity dependence of two-wave mixing absorption in a resonant medium," Opt. Lett. 12, 582-584 (1987)