Parametric interactions of acoustic waves in semiconductor quantum plasmas with strain dependent dielectric constants

Frontiers of Physics and Plasma Science

Yadav, N.^1 ; Ghosh, S.^1 ; Agrawal, A.^1

School of Studies in Physics, Vikram University, Ujjain

456010, India^1

关键词: Analytical investigations;    Nonlinear current;    Parametric interactions;    Qualitative behavior;    Quantum correction;    Quantum hydrodynamic models;    Third-order susceptibility;    Threshold characteristics;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/836/1/012019/pdf
DOI  :  10.1088/1742-6596/836/1/012019

来源: IOP

【 摘 要 】

Using quantum hydrodynamic model (QHD) of semiconductor plasma for a one-component we present an analytical investigation on parametric interaction of a laser radiation in an unmagnetised material with a strain-dependent dielectric constant. The nonlinear current density and third order susceptibility are analyzed in different wave number regions in presence and absence of quantum effect. We present the qualitative behavior of threshold pump intensity with respect to wave number in presence and absence of quantum effect. The numeric estimates are made for n-BaTiO3crystals at 77k duly irradiated by pulsed 10.6μm CO2laser. It is found that the quantum correction through Fermi temperature and Bohm potential terms modifies the threshold characteristics.