JOURNAL ARTICLE

Effect of Self Focusing on Stimulated Raman Scattering of Elliptical q-Gaussian Laser Beam in Underdense Plasma with Axial Density Ramp.

  • Published In: Nonlinear Optics, Quantum Optics: Concepts in Modern Optics, 2023, v. 58, n. 1/2. P. 99 1 of 3

  • Database: Academic Search Ultimate 2 of 3

  • Authored By: GUPTA, NAVEEN; KUMAR, SANJEEV; BHARDWAJ, S. B. 3 of 3

Abstract

Stimulated Raman scattering (SRS) of elliptical q-Gaussian laser beams interacting with axially inhomogeneous plasmas has been investigated theoretically. An intense laser beam with frequency ω0 propagating through plasma gets coupled with a preexisting electron plasma wave (EPW) at frequency ωep, due to ponderomotive nonlinearity on plasma electrons exerted by the laser beam. This nonlinear interaction of pump beam with EPW produces a back scattered wave at frequency ωs = ω0 − ωep. Using variational theory semi analytical solutions of the coupled nonlinear wave equations for the three waves (pump, EPW and scattered) have been obtained under W.K.B approximation technique. It has been observed that self focusing of the laser beam significantly affects the power of back scattered wave. [ABSTRACT FROM AUTHOR]

Additional Information

  • Source:Nonlinear Optics, Quantum Optics: Concepts in Modern Optics. 2023/07, Vol. 58, Issue 1/2, p99
  • Document Type:Article
  • Subject Area:Engineering
  • Publication Date:2023
  • ISSN:1543-0537
  • Accession Number:174566086
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