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

K. Humphrey | Zendy; R. M. G. M. Trines | Zendy; Frederico Fiúza | Zendy; Douglas C. Speirs | Zendy; P. A. Norreys | Zendy; R. A. Cairns | Zendy; L. O. Silva | Zendy; R. Bingham | Zendy

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

Author(s) -

K. Humphrey,

R. M. G. M. Trines,

Frederico Fiúza,

Douglas C. Speirs,

P. A. Norreys,

R. A. Cairns,

L. O. Silva,

R. Bingham

Publication year - 2013

Publication title -

physics of plasmas

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.75

H-Index - 160

eISSN - 1089-7674

pISSN - 1070-664X

DOI - 10.1063/1.4825356

Subject(s) - physics , brillouin scattering , plasma , scattering , atomic physics , laser , brillouin zone , optics , beam (structure) , excited state , pulse (music) , landau damping , computational physics , nuclear physics , detector

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.

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