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Title: Propagation characteristics of two-color laser pulses in homogeneous plasma

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.
Authors:
; ;  [1]
  1. Department of Physics, University of Lucknow, Lucknow 226007 (India)
Publication Date:
OSTI Identifier:
22489860
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 22; Journal Issue: 11; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; COLOR; COMPRESSION; FOCUSING; HOMOGENEOUS PLASMA; LASER RADIATION; NONLINEAR PROBLEMS; NUMERICAL ANALYSIS; PULSES; VARIATIONAL METHODS; WAVE EQUATIONS