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Pramana

, Volume 13, Issue 6, pp 599–606 | Cite as

Parametric excitation of hybrid mode in magnetised piezoelectric semiconductors

  • S Ghosh
  • P K Sen
  • S Guha
Solids

Abstract

Using the hydrodynamic model of homogeneous plasma, the parametric decay of a laser beam into an acoustic wave and another electromagnetic wave has been studied in heavily dopedn-type piezoelectric semiconductors in the presence of a transverse magnetostatic field. This decay process results in the parametric excitation of the hybrid mode. The threshold electric field necessary for the onset of instability equals to zero. The magnetostatic field couples the acoustic and the electromagnetic waves and in its absence the instability disappears. The growth rate increases with the square of the magnetic field.

Keywords

Parametric interaction hybrid mode piezoelectric semiconductor transverse magnetostatic field 

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Copyright information

© the Indiana Academy of Sciences 1979

Authors and Affiliations

  • S Ghosh
    • 1
  • P K Sen
    • 1
    • 2
  • S Guha
    • 1
    • 2
  1. 1.School of Studies in PhysicsVikram UniversityUjjain
  2. 2.Department of PhysicsRavishankar UniversityRaipur

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