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self-shaping

Laser and Particle Beams (1)

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Self-shaping of a relativistic elliptically Gaussian laser beam in underdense plasmas
T. W. Huang, C. T. Zhou, X. T. He
Journal:

Laser and Particle Beams / Volume 33 / Issue 2 / June 2015

Published online by Cambridge University Press:

28 April 2015, pp. 347-353
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Self-shaping and propagation of intense laser beams of different radial profiles in plasmas is investigated. It is shown that when a relativistic elliptically Gaussian beam propagates through an underdense plasma, its radial profile will self-organize into a circularly symmetric self-similar smooth configuration. Such self-similar propagation can be attributed to a soliton-like structure of the laser pulse. The anisotropic electron distribution results in a circular electric field that redistributes the electrons and modulates the laser pulse to a circular radial shape.