Ponderomotive and weakly relativistic self-focusing of Gaussian laser beam in plasma: Effect of light absorption
- Department of Physics, Shivaji University, Kolhapur 416 004 (India)
This paper presents an influence of light absorption on self-focusing of laser beam propagation in plasma. The differential equation for beam-width parameter is obtained using the Wentzel-Kramers-Brillouin and paraxial approximations through parabolic equation approach. The nonlinearity in dielectric function is assumed to be aroused due to the combined effect of weakly relativistic and ponderomotive regime. To highlight the nature of propagation, behavior of beam-width parameter with dimensionless distance of propagation is presented graphically and discussed. The present work is helpful to understand issues related to the beam propagation in laser plasma interaction experiments where light absorption plays a vital role.
- OSTI ID:
- 22591301
- Journal Information:
- AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1728; ISSN APCPCS; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION
BEAM PROFILES
BEAM-PLASMA SYSTEMS
DIFFERENTIAL EQUATIONS
ELECTRICAL PROPERTIES
ENERGY DEPENDENCE
FREQUENCY DEPENDENCE
LASER RADIATION
OPTICAL PROPERTIES
PHOTON BEAMS
PLASMA
PONDEROMOTIVE FORCE
RELATIVISTIC RANGE
VISIBLE RADIATION
WKB APPROXIMATION