Abstract
Atomic vapors, such as those of Na, K, and Cs, have such a large and fast nonlinear response on or near resonances that they are capable of processing images, with milliwatt lasers at submicrosecond time scales. However, the atomic motion can wash out the induced population gratings, so that the degenerate four-wave-mixing (DFWM) signal is greatly reduced for angles above -10 mrad.
© 1994 Optical Society of America
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