Relativistic theory of frequency blue-shift of an intense ionizing laser beam in a plasma

Author

Hizanidis, K. ; Vomvoridis, J.L. ; Mendonca, J.T. ; Frantzeskakis, D.J.

Author_Institution

Dept. of Electr. & Comput. Eng., Nat. Tech. Univ. of Athens, Greece

Volume

24

Issue

2

fYear

1996

fDate

4/1/1996 12:00:00 AM

Firstpage

323

Lastpage

330

Abstract

Frequency up-conversion of a laser beam causing gas ionization in a cavity is considered in a fully relativistic fashion. A simple ionization model, based on one-photon and multiphoton processes is used. A Vlasov fully nonlinear and ionization-model independent description is used in calculating the current which drives the wave equation for the electric field. The evolution of the wave frequency and its upshift are contrasted with those obtained in the nonrelativistic limit. It is found that the nonrelativistic treatment overestimates the frequency upshift by a factor more than two. Purely relativistic effects, such as a significant frequency modulation and a respective temporal pulse compression, are observed in the exact case

Keywords

Vlasov equation; ionisation; multiphoton processes; plasma light propagation; relativistic plasmas; spectral line shift; wave equations; Vlasov description; electric field; frequency blue-shift; frequency up-conversion; gas ionization; intense ionizing laser beam; multiphoton processes; one-photon processes; plasma; relativistic theory; temporal pulse compression; wave equation; Frequency modulation; Gas lasers; Ion beams; Ionization; Laser beams; Laser modes; Laser theory; Partial differential equations; Pulse compression methods; Relativistic effects;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/27.509996

Filename

509996