Interaction of an ultra-intense laser pulse with a nonuniform preformed plasma - ENSTA Paris - École nationale supérieure de techniques avancées Paris Access content directly
Journal Articles Physics of Plasmas Year : 2000

Interaction of an ultra-intense laser pulse with a nonuniform preformed plasma

Jérôme Faure
J.-R. Marquès
Christian Courtois
Z. Najmudin
  • Function : Author
M. Salvati
  • Function : Author
A. E. Dangor
  • Function : Author
A. Solodov
  • Function : Author
P. Mora
  • Function : Author
J.-C. Adam
  • Function : Author
A. Héron
  • Function : Author

Abstract

The propagation of an ultra-intense laser pulse in a preformed plasma channel was investigated experimentally. Different regimes of propagation were observed when the pulse duration was varied. For a long pulse and powers lower than the critical power for self-focusing,PL/PC<1 (I0=2×1017W/cm2), the laser pulse was guided by the preformed plasma channel over three Rayleigh lengths (4 mm) and a longitudinal plasma wave was generated by envelope self-modulation of the pulse. For a short pulse and PL/PC≫1, the interaction was dominated by self-focusing and Raman instabilities. Numerical simulations were run for the latter case, giving results comparable to the experiment. The simulations were also used to investigate the dynamics of the instabilities at high power. They showed that strong Raman side scattering first occurs at the beginning of the interaction and is then followed by self-focusing and envelope self-modulation.
No file

Dates and versions

hal-01165311 , version 1 (18-06-2015)

Identifiers

Cite

Jérôme Faure, Victor Malka, J.-R. Marquès, François Amiranoff, Christian Courtois, et al.. Interaction of an ultra-intense laser pulse with a nonuniform preformed plasma. Physics of Plasmas, 2000, 7 (7), pp.3009. ⟨10.1063/1.874153⟩. ⟨hal-01165311⟩
117 View
0 Download

Altmetric

Share

Gmail Facebook X LinkedIn More