Propagation of sinusoidal pulse laser beam in a plasma channel

Journal Article · Thu Nov 15 00:00:00 EST 2007 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.2804703· OSTI ID:21069921

Upadhyay, Ajay K; Raj, Gaurav; Mishra, Rohit K; Jha, Pallavi ^[1]

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1. Department of Physics, University of Lucknow, Lucknow 226007 (India)

The propagation of an intense sinusoidal pulse laser beam, in a preformed plasma channel having a parabolic density profile, is analyzed. Considering a nonparaxial, nonlinear wave equation and using a variational technique, simultaneous equations describing the evolution of laser spot and pulse length are obtained. Numerical methods are used to study the effect of pulse length variation on betatron oscillations of the laser spot size as it propagates in the plasma channel. Approximate conditions for propagation of the laser pulse with a constant spot size and pulse length (matched beam propagation) are obtained.

• OSTI ID: 21069921
• Journal Information: Physics of Plasmas, Vol. 14, Issue 11; Other Information: DOI: 10.1063/1.2804703; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BEAM-PLASMA SYSTEMS
BETATRON OSCILLATIONS
LASER RADIATION
LASERS
LIGHT TRANSMISSION
NONLINEAR PROBLEMS
PLASMA
PLASMA DENSITY
PULSES
VARIATIONAL METHODS
WAVE EQUATIONS