Parametric conversion of an electron plasma wave into an electromagnetic wave in a piezoelectric semiconductor

Journal Article · Wed Oct 01 04:00:00 EDT 1980 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.327481· OSTI ID:5092220

Guha, S; Apte, N

The possibility of the excitation of an electromagnetic wave as a consequence of the nonlinear coupling between an electron plasma wave and an acoustic wave in an inhomogeneous piezolectric semiconductor plasma has been analyzed. The nonlinear interaction results in the parametric amplification of acoustic waves. The dispersion relation for such a parametric instability is obtained using a hydrodynamic model of an inhomogeneous semiconductor plasma; it is solved to study the threshold electric field necessary for the onset of instability and the growth rate of the unstable mode well above the threshold as a function of the magnitude of an externally applied magnetostatic field. The numerical analysis has been made for the typical case of n-InSb at 77 K. The threshold electric field is appreciably lowered by the application of a large magnetostatic field, and the growth rate of the unstable mode is found to be 10/sup 4/ times more in a magnetoactive (B/sub 0/not =0) semiconductor than in an isotropic ( B/sub 0/=0) crystal.

• Research Organization: Department of Physics, Ravishankar University, Raipur 492010, India
• OSTI ID: 5092220
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 51:10; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700102* -- Fusion Energy-- Plasma Research-- Diagnostics
ACOUSTICS
COUPLING
DISPERSION RELATIONS
ELECTRIC FIELDS
ELECTRICITY
ELECTROMAGNETIC RADIATION
ELECTRONS
ELEMENTARY PARTICLES
ENERGY-LEVEL TRANSITIONS
EXCITATION
FERMIONS
FLUID MECHANICS
HYDRODYNAMICS
INDIUM COMPOUNDS
INSTABILITY
LEPTONS
LOW TEMPERATURE
MAGNETIC FIELDS
MATERIALS
MATHEMATICAL MODELS
MECHANICS
N-TYPE CONDUCTORS
PIEZOELECTRICITY
PLASMA
RADIATIONS
SEMICONDUCTOR MATERIALS
SOUND WAVES