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Nonlinear interaction of a Gaussian electromagnetic beam with an electrostatic lower-hybrid wave: Brillouin scattering

  • M. S. Sodha (a1), Tarsem Singh (a1) and R. P. Sharma (a1)

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In the present paper we have studied the nonlinear interaction of an electrostatic lower-hybrid wave with a high-power Gaussian EM beam, propagating perpendicular to the static magnetic field in the ordinary mode in a collisionless hot magnetoplasma. On account of the Gaussian intensity distribution of the EM beam in a plane transverse to the direction of propagation, a d.c. component of the ponderomotive force becomes finite and leads to the modification of the background electron/ion density. Thus the electrostatic lower-hybrid wave gets coupled with the pump EM wave. This coupling can lead to the focusing of the lower-hybrid wave and if appropriate conditions are satisfied leads to Brillouin scattering.

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Akhmanov, S. A., Sukhorukov, A. P. & Khokhlov, R. V. 1968 Soviet Phys. Uspekhi 10, 609.
Krall, N. A. & Trivelpiece, A. W. 1974 Principles of Plasma Physics McGraw-Hill.
Sodha, M. S., Sharma, R. P. & Kaushik, S. C. 1976a J. App. Phys. 47. 3518.
Sodha, M. S., Tripathi, V. K. & Ghatak, A. K. 1976b Prog. Opt. 13, 170.
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Nonlinear interaction of a Gaussian electromagnetic beam with an electrostatic lower-hybrid wave: Brillouin scattering

  • M. S. Sodha (a1), Tarsem Singh (a1) and R. P. Sharma (a1)

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