Phase conjugation used as a test of the local and nonlocal characteristics of optical nonlinearities in microemulsions.
We report what are to our knowledge the first degenerate four-wave mixing experiments in microemulsions using a cw argon laser. The static and dynamic behavior of the reflectivity of both induced gratings is quantitatively analyzed. The conjugated signal dependence on the angle between the pump and probe waves is used to separate the local electrostrictive and the nonlocal thermodiffusive nonlinear processes, which are both efficient in the studied microemulsion.
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Freysz
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Laffon
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Ducasse