Propagation of an intense laser beam in a tapered plasma channel

Journal Article · Sat Mar 15 00:00:00 EDT 2008 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.2841018· OSTI ID:21106180

Jha, Pallavi; Singh, Ram Gopal; Upadhyaya, Ajay K; Mishra, Rohit K ^[1]

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

Propagation characteristics and modulation instability of an intense laser beam propagating in an axially tapered plasma channel, having a parabolic radial density profile, are studied. Using the source-dependent expansion technique, the evolution equation for the laser spot is set up and conditions for propagation of the laser beam with a constant spot size (matched beam) are obtained. Further, the dispersion relation and growth rate of modulation instability of the laser pulse as it propagates through linearly and quadratically tapered plasma channels, have been obtained.

• OSTI ID: 21106180
• Journal Information: Physics of Plasmas, Vol. 15, Issue 3; Other Information: DOI: 10.1063/1.2841018; (c) 2008 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
BEAMS
DISPERSION RELATIONS
EQUATIONS
LASERS
PLASMA
PLASMA DENSITY
PLASMA INSTABILITY