Harmonic generation by the propagation of two-colour laser beams in an underdense plasma

An analytical theory is developed for studying the phenomenon of generation of efficient odd and even high harmonics by the propagation of two-colour linearly polarized laser beams in a homogeneous underdense plasma. The wave equation governing the evolution of the amplitude of various harmonics dri...

Full description

Saved in:
Bibliographic Details
Published in:Journal of plasma physics 2013-10, Vol.79 (5), p.933-938
Main Authors: JHA, PALLAVI, VERMA, NIRMAL KUMAR, SAROCH, AKANKSHA
Format: Article
Language:English
Subjects:
Amplitudes
Beamforming
Density
Harmonic analysis
Lasers
Plasma
Plasma physics
Propagation
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:An analytical theory is developed for studying the phenomenon of generation of efficient odd and even high harmonics by the propagation of two-colour linearly polarized laser beams in a homogeneous underdense plasma. The wave equation governing the evolution of the amplitude of various harmonics driven by the current density at corresponding frequencies is set up. The ratio of the fundamental frequencies of the two laser beams is considered to be an arbitrary integer. A numerical evaluation of amplitudes of the third, fourth and fifth harmonics has been presented. It is seen that the third harmonic amplitude generated by the two-colour system is enhanced in comparison to that obtained by a single laser beam. The detuning distance for the former is also increased in comparison to the latter case.
ISSN:0022-3778
1469-7807
DOI:10.1017/S0022377813000780