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Kvantovaya Elektronika, 2008, Volume 38, Number 2, Pages 131–136 (Mi qe13623)  

Nonlinear optical phenomena

Spectral and temperature features of coherent picosecond nonlinear response of HTSCs at low excitation levels

Yu. V. Bobyrev, V. M. Petnikova, K. V. Rudenko, V. V. Shuvalov

International Laser Center of Moscow State University
Abstract: It is shown that for the appropriate choice of the spectral measurement range (the choice of the coincidence point for the pumping component frequencies in the methods of biharmonic pumping and degenerate four-photon spectroscopy), the spectral and temperature features of the picosecond nonlinear response of high-temperature super-conductors (HTSCs) caused by interband transitions in the electronic spectrum with a metastable energy gap are stable with respect to the excitation level. The character of these features is determined by the resonance component of the total nonlinear response, which is formed at initial HTSC temperatures below the phase transition point (when the energy gap appears in the electronic spectrum).
Received: 26.04.2007
Revised: 28.06.2007
English version:
Quantum Electronics, 2008, Volume 38, Issue 2, Pages 131–136
DOI: https://doi.org/10.1070/QE2008v038n02ABEH013623
Bibliographic databases:
Document Type: Article
PACS: 42.62.Fi, 78.47.+p, 74.25.Gz, 78.20.Bh
Language: Russian


Citation: Yu. V. Bobyrev, V. M. Petnikova, K. V. Rudenko, V. V. Shuvalov, “Spectral and temperature features of coherent picosecond nonlinear response of HTSCs at low excitation levels”, Kvantovaya Elektronika, 38:2 (2008), 131–136 [Quantum Electron., 38:2 (2008), 131–136]
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