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Kvantovaya Elektronika, 2013, Volume 43, Number 8, Pages 735–739 (Mi qe15093)  

Interaction of laser radiation with matter

Resonance laser-plasma excitation of coherent terahertz phonons in the bulk of fluorine-bearing crystals under high-intensity femtosecond laser irradiation

F. V. Potemkinab, E. I. Mareevab, P. M. Mikheev, N. G. Khodakovskiic

a Faculty of Physics, Lomonosov Moscow State University
b International Laser Center of Moscow State University
c Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow

Abstract: The dynamics of coherent phonons in fluorine-containing crystals was investigated by pump-probe technique in the plasma production regime. Several phonon modes, whose frequencies are overtones of the 0.38-THz fundamental frequency, were simultaneously observed in a lithium fluoride crystal. Phonons with frequencies of 1 and 0.1 THz were discovered in a calcium fluoride crystal and coherent phonons with frequencies of 1 THz and 67 GHz were observed in a barium fluoride crystal. Furthermore, in the latter case the amplitudes of phonon mode oscillations were found to significantly increase 15 ps after laser irradiation.

Keywords: femtosecond laser-produced microplasma, third harmonic generation, coherent phonons.

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English version:
Quantum Electronics, 2013, 43:8, 735–739

Bibliographic databases:

PACS: 63.20.dd, 52.50.Jm, 42.65.Ky, 42.65.Re
Received: 10.01.2013
Revised: 11.03.2013

Citation: F. V. Potemkin, E. I. Mareev, P. M. Mikheev, N. G. Khodakovskii, “Resonance laser-plasma excitation of coherent terahertz phonons in the bulk of fluorine-bearing crystals under high-intensity femtosecond laser irradiation”, Kvantovaya Elektronika, 43:8 (2013), 735–739 [Quantum Electron., 43:8 (2013), 735–739]

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  • http://mi.mathnet.ru/eng/qe/v43/i8/p735

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  • Квантовая электроника Quantum Electronics
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