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Nonlinear optical phenomena
Features of the nonlinear response of high-temperature superconductors in coherent picosecond four-photon spectroscopy with high excitation level
Yu. V. Bobyrev, V. M. Petnikova, K. V. Rudenko, V. V. Shuvalov International Laser Center of Moscow State University
Abstract:
Assuming that the nonlinear response of high-temperature superconductors is caused by interband transitions in the electronic spectrum with a metastable energy gap, a model describing the results of experiments performed by picosecond coherent four-photon spectroscopy with a high excitation level is developed. It is shown that a jump in the dependence of the self-diffraction efficiency on the initial temperature of a sample should be observed in the vicinity of the point of superconducting phase transition. It is found that upon biharmonic pump – probing, the energy gap in the electronic spectrum can be detected by a specific two-photon resonance.
Received: 20.03.2006
Citation:
Yu. V. Bobyrev, V. M. Petnikova, K. V. Rudenko, V. V. Shuvalov, “Features of the nonlinear response of high-temperature superconductors in coherent picosecond four-photon spectroscopy with high excitation level”, Kvantovaya Elektronika, 36:5 (2006), 408–414 [Quantum Electron., 36:5 (2006), 408–414]
Linking options:
https://www.mathnet.ru/eng/qe13234 https://www.mathnet.ru/eng/qe/v36/i5/p408
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Abstract page: | 111 | Full-text PDF : | 53 | First page: | 1 |
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