Self-focusing of intense laser beam in magnetized plasma

In this paper, evolution of spot size of an intense laser beam in cold, underdense, magnetized plasma has been studied. The plasma is embedded in a uniform magnetic field perpendicular to both, the direction of propagation and electric vector of the radiation field. Nonlinear current density is set...

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Bibliographic Details
Published in:Physics of plasmas 2006-10, Vol.13 (10), p.103102-103102-5
Main Authors: Jha, Pallavi, Mishra, Rohit K., Upadhyaya, Ajay K., Raj, Gaurav
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BEAM-PLASMA SYSTEMS
CURRENT DENSITY
FOCUSING
LIGHT TRANSMISSION
MAGNETIC FIELDS
MAGNETIZATION
NONLINEAR PROBLEMS
PLASMA
RADIATION TRANSPORT
VECTORS
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Summary:In this paper, evolution of spot size of an intense laser beam in cold, underdense, magnetized plasma has been studied. The plasma is embedded in a uniform magnetic field perpendicular to both, the direction of propagation and electric vector of the radiation field. Nonlinear current density is set up and the source dependent expansion method is used to determine the evolution of the spot size of a laser beam having a Gaussian profile. It is shown that transverse magnetization of plasma enhances the self-focusing property of the laser beam leading to reduction in critical power required to self-focus the beam.
ISSN:1070-664X
1089-7674
DOI:10.1063/1.2357715