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Cross-focusing of two hollow Gaussian laser beams in plasmas

Published online by Cambridge University Press:  06 April 2011

Ruchika Gupta ,
Prerana Sharma ,
M. Rafat  and
R.P. Sharma
Ruchika Gupta*
Affiliation:
Department of Applied Sciences and Humanities, Jamia Millia Islamia, New Delhi, India
Prerana Sharma
Affiliation:
Government Ujjain Engineering College, Ujjain, Madhya Pradesh, India
M. Rafat
Affiliation:
Department of Applied Sciences and Humanities, Jamia Millia Islamia, New Delhi, India
R.P. Sharma
Affiliation:
Centre for Energy Studies, Indian Institute of Technology, New Delhi, India
*
Address correspondence and reprint requests to: Ruchika Gupta, Department of Applied Sciences and Humanities, Jamia Millia Islamia, New Delhi 110025, India. E-mail: [email protected]
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Abstract

This article presents the cross-focusing of two high power dark hollow Gaussian beams in plasma when relativistic nonlinearity is operative. A paraxial like approach has been used in the present analysis. In this study, the non-linear dielectric function has been expanded in terms of radial distance from the maximum of the irradiance, rather than from the axis, as is the case of Gaussian beams. The nature of propagation of a hollow Gaussian beam propagating in plasmas has been studied under the influence of relativistic non-linearity. The effect on the order (n) of hollow Gaussian beam on the cross-focusing of two beams has been explored in relativistic non-linearity in this publication.

Keywords

Cross-focusingHollow Gaussian beamLaser plasma interactionRelativistic nonlinearityRipple
Type
Research Article
Information
Laser and Particle Beams , Volume 29 , Issue 2 , June 2011 , pp. 227 - 230
Copyright
Copyright © Cambridge University Press 2011

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References

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