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The Study of Dispersion Parameter and Excitation Intensity of Acoustic Wave in Semiconducting Plasma
Author(s) -
Jat K. L.,
Gupta V. K.
Publication year - 1997
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 - 10.1002/1521-3951(199705)201:1<143::aid-pssb143>3.0.co;2-c
Subject(s) - excitation , polarization (electrochemistry) , piezoelectricity , condensed matter physics , intensity (physics) , physics , magnetic field , dispersion (optics) , plasma , acoustic wave , optics , materials science , acoustics , chemistry , quantum mechanics
Dispersive characteristics and pump excitation intensity are analytically investigated in transversely magnetised piezoelectric and deformation potential coupling noncentrosymmetric semiconductor, by assuming that origin of the nonlinear interaction lies in the second‐order optical susceptibility arising from the nonlinear induced polarization (current density). By the real part of susceptibility, the dispersive parameter and the threshold value of the pump electric intensity are obtained with wave number, magnetic field, scattered angle. The phenomenon of self‐defocusing of the signal in the prevailing case is found to be a consequence of the negative dispersive characteristics exhibited by the acoustic waves.