Relativistic laser pulse compression in magnetized plasmas

The self-compression of a weak relativistic Gaussian laser pulse propagating in a magnetized plasma is investigated. The nonlinear Schrödinger equation, which describes the laser pulse amplitude evolution, is deduced and solved numerically. The pulse compression is observed in the cases of both left...

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Bibliographic Details
Published in:Physics of plasmas 2015-07, Vol.22 (7)
Main Authors: Liang, Yun, Sang, Hai-Bo, Wan, Feng, Lv, Chong, Xie, Bai-Song
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
AMPLITUDES
Circularity
COMPRESSION
LASER RADIATION
Lasers
MAGNETIC FIELDS
NONLINEAR PROBLEMS
PLASMA
Plasma physics
Plasmas (physics)
Pulse amplitude
Pulse compression
Pulse propagation
PULSES
Relativism
Relativistic effects
RELATIVISTIC RANGE
Schrodinger equation
SCHROEDINGER EQUATION
Short pulses
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Summary:The self-compression of a weak relativistic Gaussian laser pulse propagating in a magnetized plasma is investigated. The nonlinear Schrödinger equation, which describes the laser pulse amplitude evolution, is deduced and solved numerically. The pulse compression is observed in the cases of both left- and right-hand circular polarized lasers. It is found that the compressed velocity is increased for the left-hand circular polarized laser fields, while decreased for the right-hand ones, which is reinforced as the enhancement of the external magnetic field. We find a 100 fs left-hand circular polarized laser pulse is compressed in a magnetized (1757 T) plasma medium by more than ten times. The results in this paper indicate the possibility of generating particularly intense and short pulses.
ISSN:1070-664X
1089-7674
DOI:10.1063/1.4926590