Effect of collisions on amplification of laser beams by Brillouin scattering in plasmas

Tools

Humphrey, K. A. and Trines, R. M G M and Fiuza, F. and Speirs, D. C. and Norreys, P. and Cairns, R. A. and Silva, L. O. and Bingham, R. (2013) Effect of collisions on amplification of laser beams by Brillouin scattering in plasmas. Physics of Plasmas, 20 (10). 102114. ISSN 1070-664X (https://doi.org/10.1063/1.4825356)

[thumbnail of HumphreyetalPOP2013-collisions-on-amplification-of-laser-beams]
Preview
 PDF. Filename: HumphreyetalPOP2013_collisions_on_amplification_of_laser_beams.pdf
Final Published Version
License: Creative Commons Attribution 4.0 logo
Download (802kB)| Preview

Abstract

We report on particle in cell simulations of energy transfer between a laser pump beam and a counter-propagating seed beam using the Brillouin scattering process in uniform plasma including collisions. The results presented show that the ion acoustic waves excited through naturally occurring Brillouin scattering of the pump field are preferentially damped without affecting the driven Brillouin scattering process resulting from the beating of the pump and seed fields together. We find that collisions, including the effects of Landau damping, allow for a more efficient transfer of energy between the laser beams, and a significant reduction in the amount of seed pre-pulse produced.

ORCID iDs

Humphrey, K. A., Trines, R. M G M, Fiuza, F., Speirs, D. C. ORCID logoORCID: https://orcid.org/0000-0002-4367-1459, Norreys, P., Cairns, R. A., Silva, L. O. and Bingham, R. ORCID logoORCID: https://orcid.org/0000-0002-9843-7635;
CORE (COnnecting REpositories)