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Parametric Interaction of Electromagnetic and Acoustic Waves in Cubic Semiconductors with Strain‐Dependent Dielectric Constant
Author(s) -
Artemenko O. L.,
Sevruk B. B.
Publication year - 1995
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221890129
Subject(s) - physics , electromagnetic radiation , electromagnetic electron wave , transverse wave , dispersion relation , acoustics , wave propagation , optics
The phenomenon of parametric excitation of a transverse hypersonic wave by laser and microwave radiation in cubic semiconductor crystals with strain‐dependent dielectric constant and piezoelectric effect induced by a constant transverse electric field is investigated. The numerical analysis of the exact dispersion equation is performed providing resonance dispersion relations of the acoustic wave gain factor for a wide range of electromagnetic wave frequencies and semiconductor plasma parameters. The boundaries of the absolute instability region and electromagnetic field threshold value are set up, as well as the optimal relationship between the collision frequency and the frequencies of electromagnetic and plasma waves governing acoustic wave generation and amplification.