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    • Parametric excitation of hybrid mode in magnetised piezoelectric semiconductors

      S Ghosh P K Sen S Guha

      Solids Volume 13 Issue 6 December 1979 pp 599-606

    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/013/06/0599-0606

    • Keywords

       

      Parametric interaction; hybrid mode; piezoelectric semiconductor; transverse magnetostatic field

    • 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.

    • Author Affiliations

       

      S Ghosh1 P K Sen1 2 S Guha1 2

      1. School of Studies in Physics, Vikram University, Ujjain - 456 010
      2. Department of Physics, Ravishankar University, Raipur - 492 010

    • Dates

       
      Published
      December 1979
      Manuscript received
      20 February 1979
      Manuscript revised
      8 August 1979

  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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