Comparision of Nonlinear Interactions in Piezoelectric and Ferroelectric Materials.

In the present work a comprehensive analytical investigation is made of the parametric decomposition of high-power helicon wave into another helicon and an acoustic wave in a longitudinally magnetized inhomogeous semiconducting plasmas for belonging to the class 43 ̅m and in BaTiO3. The dispersion relation is obtained by using a hydrodynamic model of an homogeneous, piezoelectric, one-component (electron) semiconducting plasma. The threshold value of pump electric field and the growth rate of unstable mode well above the threshold are also discussed in the present study. This analysis is applied to a specific semiconductor, n-InSb at 77K and BaTiO3 with strain dependent dielectric constant (SDDC). The laser wave intensities used are in the range of 109 to1012 Wm-2 which is assumed to be less than the damage threshold of the InSb crystal. The growth rate which is being found in this study is 1010 s-1. In non liner wave propagation by the analyses of interaction depending on a particular physical situation is of great importance. It is a fact that the study of matter wave interaction provides a tremendous insight that is very much helpful to analyses the fundamental properties and characteristics of the medium.