Self-focusing of Gaussian laser beam in weakly relativistic and ponderomotive regime using upward ramp of plasma density

Journal Article · Thu Aug 15 00:00:00 EDT 2013 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4817019· OSTI ID:22220659

Patil, S. D. ^[1]; Takale, M. V. ^[2]

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1. Department of Physics, Devchand College, Arjunnagar, Kolhapur 591 269 (India)
2. Department of Physics, Doodhsakhar Mahavidyalaya, Bidri, Kolhapur 416 208 (India)

We have studied the steady state self-focusing of Gaussian laser beam in weakly relativistic and ponderomotive regime for upward increasing plasma ramp density profile. We have obtained the differential equation for beam width parameter by using parabolic equation approach under the usual Wentzel–Kramers–Brillouin and paraxial approximations. The variation of beam width parameter with respect to dimensionless distance of propagation is presented graphically by varying the parameters of density profile, intensity parameter, and electronic temperature. It shows that the above stated parameters play an important role in propagation characteristics and give reasonably interesting results.

• OSTI ID: 22220659
• Journal Information: Physics of Plasmas, Vol. 20, Issue 8; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
APPROXIMATIONS
BEAM PROFILES
BEAMS
DIFFERENTIAL EQUATIONS
DISTANCE
FOCUSING
LASERS
LIGHT TRANSMISSION
PLASMA DENSITY
PONDEROMOTIVE FORCE
RELATIVISTIC PLASMA
RELATIVISTIC RANGE
VARIATIONS