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The Study of Polarization and Intensity of Acoustohelicon Wave in Semiconducting Plasma
Author(s) -
Jat K. L.
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(199710)203:2<479::aid-pssb479>3.0.co;2-0
Subject(s) - polarization (electrochemistry) , physics , polarization rotator , semiconductor , scattering , optics , condensed matter physics , piezoelectricity , optoelectronics , chemistry , birefringence , acoustics
Assuming that the origin of nonlinear interaction lies in the second‐order optical polarization arising from the nonlinear induced current density and using the coupled mode theory, the effective second‐order polarization of acoustohelicon waves is analytically investigated in longitudinally magnetized piezoelectric and deformation potential coupling semiconductors of noncentrosymmetric nature. The threshold condition is obtained for the onset of the parametric amplification of acoustohelicon waves. The effective second‐order optical polarization is determined by using the electromagnetic treatment and the coupled mode scheme. Using the effective polarization so achieved, the expression for the transmitted intensity and crystal cell efficiency is also derived. The dependence of magnetic field, wave number of pump wave and scattering angle on the threshold intensity and effective polarization is studied. This analysis would provide new means for the construction of piezo‐deforming crystal cells and diagnostics of semiconductors.