Parametric Phonon-Helicon Interaction in Centrosymmetric Crystals with Strain-Dependent Dielectric Constant

Abstract

The process of interaction between circularly polarized coherent transverse phonons and slow electrokinetic waves in the centrosymmetric crystal placed in a longitulinal magnetic field and possessing strong strain dependence of the dielectric constant caused by the electrostriction is considered. The cut-off system of equations for the process of nonlinear four-wave interaction in crystal with a quadratic electrostriction corresponding to direct energy conversion from helicon to acoustic wave is derived. Tle solution is sought for numerically in the vicinity of a synnchonism point determined by the intersection of Helicon and phonon dispersion curves at different values of semiconductor plasma parameters. The results show the possibility of effective phonon parametric amplification in semiconductor crystal with the electroinduced elastic anisotropy.

Nonlinear parametric interactions in ion-implanted semiconductor plasmas having strain-dependent dielectric constants

“…Nonlinear parametric (NLP) interactions in semiconducting materials have been studied by a number of researchers. [1][2][3][4][5][6][7][8] These interactions provide useful information regarding the physical properties of the host medium. A variety of nonlinear effects have been observed in the interaction of high-power electromagnetic waves with semiconductor plasmas.…”