Propagation characteristics of two-color laser pulses in homogeneous plasma

Journal Article · Sun Nov 15 04:00:00 EST 2015 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4934977· OSTI ID:22489860

Hemlata,; Saroch, Akanksha; Jha, Pallavi ^[1]

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

An analytical and numerical study of the evolution of two-color, sinusoidal laser pulses in cold, underdense, and homogeneous plasma has been presented. The wave equations for the radiation fields driven by linear as well as nonlinear contributions due to the two-color laser pulses have been set up. A variational technique is used to obtain the simultaneous equations describing the evolution of the laser spot size, pulse length, and chirp parameter. Numerical methods are used to graphically analyze the simultaneous evolution of these parameters due to the combined effect of the two-color laser pulses. Further, the pulse parameters are compared with those obtained for a single laser pulse. Significant focusing, compression, and enhanced positive chirp is obtained due to the combined effect of simultaneously propagating two-color pulses as compared to a single pulse propagating in plasma.

• OSTI ID: 22489860
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 11 Vol. 22; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
COLOR
COMPRESSION
FOCUSING
HOMOGENEOUS PLASMA
LASER RADIATION
NONLINEAR PROBLEMS
NUMERICAL ANALYSIS
PULSES
VARIATIONAL METHODS
WAVE EQUATIONS