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Kvantovaya Elektronika, 2006, Volume 36, Number 5, Pages 408–414 (Mi qe13234)  

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.

Full text: PDF file (445 kB)

English version:
Quantum Electronics, 2006, 36:5, 408–414

Bibliographic databases:

PACS: 42.62.Fi, 78.47.+p, 74.25.Gz, 78.20.Bh
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]

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  • http://mi.mathnet.ru/eng/qe/v36/i5/p408

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