Low-frequency four-photon spectroscopy of surface waves in semiconductors: A new mechanism of optical nonlinearity |
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| Authors: | A. F. Bunkin M. A. Davydov V. G. Mikhalevich S. M. Pershin V. N. Streltsov |
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| Affiliation: | 1.Prokhorov General Physics Institute,Russian Academy of Sciences,Moscow,Russia |
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| Abstract: | A new mechanism of optical nonlinearity of intrinsic semiconductors is proposed, which is based on bandgap modulation due to the four-wave mixing of interacting waves on the semiconductor surface. This phenomenon is theoretically considered within a one-dimensional model. The corresponding resonances are experimentally found in Ge and Si samples. |
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