Nonlinear relativistic interaction of an ultrashort laser pulse with a cold plasma

J. M. Rax; N. J. Fisch

doi:10.1063/1.860087

Nonlinear relativistic interaction of an ultrashort laser pulse with a cold plasma

J. M. Rax, N. J. Fisch

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22 Scopus citations

Abstract

The nonlinear, relativistic dynamics that results when intense (10 ¹⁸ W/cm² and above) and ultrashort (one plasma period or shorter) laser pulse travels through a cold underdense plasma is investigated. Using a Lagrangian analysis of the plasma response, it can be demonstrated that the nonlinear wake, the collective dissipation, the nonlinear Compton losses, and the harmonic generation, are all determined by a finite set of integrated scalar quantities. This result holds for one-dimensional, short pulses of arbitrary amplitude, shape, and polarization, so that these very short intense laser pulses in a plasma can be viewed essentially as a quasiparticle characterized by a small set of global parameters.

Original language	English (US)
Pages (from-to)	1323-1331
Number of pages	9
Journal	Physics of Fluids B
Volume	4
Issue number	5
DOIs	https://doi.org/10.1063/1.860087
State	Published - 1992

All Science Journal Classification (ASJC) codes

Computational Mechanics
Condensed Matter Physics
Mechanics of Materials
Physics and Astronomy(all)
Fluid Flow and Transfer Processes

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10.1063/1.860087

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abstract = "The nonlinear, relativistic dynamics that results when intense (10 18 W/cm2 and above) and ultrashort (one plasma period or shorter) laser pulse travels through a cold underdense plasma is investigated. Using a Lagrangian analysis of the plasma response, it can be demonstrated that the nonlinear wake, the collective dissipation, the nonlinear Compton losses, and the harmonic generation, are all determined by a finite set of integrated scalar quantities. This result holds for one-dimensional, short pulses of arbitrary amplitude, shape, and polarization, so that these very short intense laser pulses in a plasma can be viewed essentially as a quasiparticle characterized by a small set of global parameters.",

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AB - The nonlinear, relativistic dynamics that results when intense (10 18 W/cm2 and above) and ultrashort (one plasma period or shorter) laser pulse travels through a cold underdense plasma is investigated. Using a Lagrangian analysis of the plasma response, it can be demonstrated that the nonlinear wake, the collective dissipation, the nonlinear Compton losses, and the harmonic generation, are all determined by a finite set of integrated scalar quantities. This result holds for one-dimensional, short pulses of arbitrary amplitude, shape, and polarization, so that these very short intense laser pulses in a plasma can be viewed essentially as a quasiparticle characterized by a small set of global parameters.

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Nonlinear relativistic interaction of an ultrashort laser pulse with a cold plasma

Abstract

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