Effects of coherent polarization interactions on time-resolved degenerate four-wave mixing
- 10 September 1990
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 65 (11) , 1340-1343
- https://doi.org/10.1103/physrevlett.65.1340
Abstract
We report the first observation of coherent polarization interactions in dense media in time-resolved degenerate four-wave mixing in semiconductors. For near-resonant ultrashort-optical-pulse excitation, these interactions lead to a diffracted signal at negative delay times, with a slope half that for positive delay times. At higher intensities, two temporal maxima appear in the diffracted signal, in agreement with many-body theory.Keywords
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