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Stimulated brillouin scattering of helicon waves in a semiconductor
Author(s) -
Sodha M. S.,
Sharma R. R.
Publication year - 1979
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.2220940239
Subject(s) - helicon , physics , ponderomotive force , electron , semiconductor , brillouin scattering , instability , scattering , modulational instability , microwave , optics , atomic physics , condensed matter physics , plasma , optoelectronics , optical fiber , quantum mechanics
A right‐handed circularly polarised helicon wave decays resonantly into a low‐frequency acoustic wave and a scattered helicon wave in a piezoelectric semiconductor. The low‐frequency nonlinearity arises through the parallel ponderomotive force on electrons whereas the high‐frequency nonlinearity arises through the equation of continuity. The growth rate of instability turns out to be ≈ 10 3 s −1 for 1 to 10 MHz acoustic perturbations when a microwave of 20 kW/cm 2 propagates through n‐InSb.