Effects of coherent polarization interactions on time-resolved degenerate four-wave mixing

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| 1990年 / American Physical Society, Melville, United States卷 / 65期
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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.
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