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Kvantovaya Elektronika, 2002, Volume 32, Number 12, Pages 1105–1112 (Mi qe2353)  

This article is cited in 2 scientific papers (total in 2 papers)

Special issue devoted to the 80th anniversary of academician N. G. Basov's birth

Coherent electron — hole state and femtosecond cooperative emission in bulk GaAs

P. P. Vasil'eva, H. Kanb, H. Ohtab, T. Hirumab

a P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow
b Central Research Laboratory, Hamamatsu Photonics K.K., Japan

Abstract: The conditions for obtaining a collective coherent electron – hole state in semiconductors are discussed. The results of the experimental study of the regime of cooperative recombination of high-density electrons and holes (more than 3 × 1018 cm-3) in bulk GaAs at room temperature are presented. It is shown that the collective pairing of electrons and holes and their condensation cause the formation of a short-living coherent electron – hole BCS-like state, which exhibits radiative recombination in the form of high-power femtosecond optical pulses. It is experimentally demonstrated that almost all of the electrons and holes available are condensed at the very bottoms of the bands and are at the cooperative state. The average lifetime of this state is measured to be of about 300 fs. The dependences of the order parameter (the energy gap of the spectrum of electrons and holes) and the Fermi energy of the coherent BCS state on the electron – hole concentration are obtained.

Full text: PDF file (253 kB)

English version:
Quantum Electronics, 2002, 32:12, 1105–1112

Bibliographic databases:

PACS: 42.50.Fx, 71.35.Ee, 42.55.Px
Received: 28.06.2002

Citation: P. P. Vasil'ev, H. Kan, H. Ohta, T. Hiruma, “Coherent electron — hole state and femtosecond cooperative emission in bulk GaAs”, Kvantovaya Elektronika, 32:12 (2002), 1105–1112 [Quantum Electron., 32:12 (2002), 1105–1112]

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  • http://mi.mathnet.ru/eng/qe/v32/i12/p1105

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    Citing articles on Google Scholar: Russian citations, English citations
    Related articles on Google Scholar: Russian articles, English articles

    This publication is cited in the following articles:
    1. Peter P. Vasil'ev, phys stat sol (b), 241:6 (2004), 1251  crossref  mathscinet  isi  scopus
    2. Peter P Vasil'ev, Rep Prog Phys, 72:7 (2009), 076501  crossref  isi  scopus
  • Квантовая электроника Quantum Electronics
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