Relativistic self-focusing and self-channeling of Gaussian laser beam in plasma

In the present paper, we have studied the self-focusing of a laser beam in a relativistic plasma. We have set up the non-linear differential equation for the beam width parameter of the main beam by using the moment theory approach and solved it numerically by the Runge–Kutta method. The results obt...

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Bibliographic Details
Published in:Applied physics. B, Lasers and optics Lasers and optics, 2010-11, Vol.101 (3), p.617-622
Main Authors: Singh, A., Walia, K.
Format: Article
Language:English
Subjects:
Beam trapping, self-focusing and defocusing
self-phase modulation
Beams (radiation)
Differential equations
Engineering
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Gaussian
Laser beams
Lasers
Mathematical models
Nonlinear optics
Optical Devices
Optics
Photonics
Physical Chemistry
Physics
Physics and Astronomy
Plasma (physics)
Quantum Optics
Three dimensional
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Summary:In the present paper, we have studied the self-focusing of a laser beam in a relativistic plasma. We have set up the non-linear differential equation for the beam width parameter of the main beam by using the moment theory approach and solved it numerically by the Runge–Kutta method. The results obtained are in agreement with the findings of the simulation (3D PIC). A new stable form of self-channeling propagation has also been observed.
ISSN:0946-2171
1432-0649
DOI:10.1007/s00340-010-4230-4