LO‐Phonon Instability in Semiconductors in the Presence of Two Laser Fields Plus DC Strong Magnetic Field | Zendy

Fonseca A. L. A. | Zendy; Nunes O. A. C. | Zendy

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LO‐Phonon Instability in Semiconductors in the Presence of Two Laser Fields Plus DC Strong Magnetic Field

Author(s) -

Fonseca A. L. A.,

Nunes O. A. C.

Publication year - 1994

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.2221840206

Subject(s) - condensed matter physics , physics , magnetic field , phonon , plasmon , instability , electron , laser , semiconductor , scattering , optics , quantum mechanics

Phonon scattering by electrons in a bulk semiconductor in two laser fields in the additional presence of a strong (quantizing) magnetic field is discussed. A kinetic equation for the LO‐phonon population is derived, from which the damping rate is calculated. It is found that longitudinal optical lattice waves may be amplified over a relatively narrow range of plasmon wave numbers in the direction perpendicular to the magnetic field direction. Furthermore, the joint action of the three external fields results in a very large amplification rate, in contrast to the zero magnetic field case.

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