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Enhanced Raman Scattering of Elliptical Laser beam in a Collisional Plasma
Authors:A. Singh  K. Walia
Affiliation:Department of Physics, National Institute of Technology Jalandhar, India
Abstract:This paper presents the Enhanced Raman scattering of a elliptical laser beam in a collisional plasma. We have considered the mechanism of non‐uniform heating of carriers along the wave‐front, which is important in collisional plasma. The nonlinearity arising through non‐uniform heating leads to redistribution of carriers, which modifies the background plasma density profile in a direction transverse to pump beam axis. This modification in density effects the incident laser beam, plasma wave and back‐scattered beam. Non‐linear differential equations for the beam width parameters of pump laser beam, plasma wave and back‐scattered beam are set up and solved numerically. Numerical results predict the effect of self‐focusing of waves on the back‐scattered beam (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Keywords:Elliptical gaussian beam  self‐focusing  electron plasma wave  collisional plasma  Raman scattering
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