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Title: Dynamic manipulation of the polarization of intense laser beams via optical wave mixing in plasmas

Authors:
; ; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1169873
Report Number(s):
LLNL-JRNL-657399
DOE Contract Number:
DE-AC52-07NA27344
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters, vol. 113, no. 20, February 11, 2015, pp. 205001(5)
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 70 PLASMA PHYSICS AND FUSION

Citation Formats

Michel, P A, Divol, L, Turnbull, D P, and Moody, J D. Dynamic manipulation of the polarization of intense laser beams via optical wave mixing in plasmas. United States: N. p., 2014. Web.
Michel, P A, Divol, L, Turnbull, D P, & Moody, J D. Dynamic manipulation of the polarization of intense laser beams via optical wave mixing in plasmas. United States.
Michel, P A, Divol, L, Turnbull, D P, and Moody, J D. Wed . "Dynamic manipulation of the polarization of intense laser beams via optical wave mixing in plasmas". United States. doi:. https://www.osti.gov/servlets/purl/1169873.
@article{osti_1169873,
title = {Dynamic manipulation of the polarization of intense laser beams via optical wave mixing in plasmas},
author = {Michel, P A and Divol, L and Turnbull, D P and Moody, J D},
abstractNote = {},
doi = {},
journal = {Physical Review Letters, vol. 113, no. 20, February 11, 2015, pp. 205001(5)},
number = ,
volume = ,
place = {United States},
year = {Wed Jul 16 00:00:00 EDT 2014},
month = {Wed Jul 16 00:00:00 EDT 2014}
}
  • Theoretical studies of optical phase conjugation via four-wave mixing in a two-temperature laser produced carbon plasma are reported. Starting from Maxwell equations and using the theory of parametric decay instability, analytical expressions of the phase conjugate reflectivity for a steady-state probe have been obtained and numerically evaluated for the case of the laser plasma formed by irradiating a carbon slab target with a Nd:Glass laser operating at {lambda}{sub 0}=1.06 {mu}. The variation of reflectivity as a function of frequency and angular mismatch between the pump and probe waves has been considered. It is observed that the reflectivity peaks occur undermore » the situation of resonance when the frequency mismatch equals the ion-acoustic frequency of the plasma. The detailed numerical results are graphically reported and discussed. {copyright} {ital 1995} {ital American} {ital Institute} {ital of} {ital Physics}.« less
  • Numerical and theoretical studies of laser beam interaction with underdense plasmas involving ion wave instabilities are presented. The theoretical model that is used involves realistic distribution of laser intensity in a focal spot and a non-paraxial electromagnetic wave equation coupled to the ion acoustic wave equation in a two-dimensional geometry. Included among the important results is a weak correlation between backscattered stimulated Brillouin scattering (SBS) reflectivity and filamentation or self-focusing instabilities. The transmitted light demonstrates angular spreading and frequency shifts consistent with near-forward SBS. The role of filamentation and self-focusing on the transmitted light is also discussed. {copyright} {ital 1997more » American Institute of Physics.}« less
  • Theoretical profiles of power reflectivity of a phase conjugate electromagnetic wave generated by nearly degenerate four-wave mixing in a carbon plasma via parametric decay instability (PDI) are studied. The plasma is considered to be produced by irradiating a carbon slab target with an Nd:glass high-power laser pulse at an intensity above the PDI threshold. The plasma refractive index corresponding to the PDI region is taken into account in the wave equations. Two electromagnetic pump waves counterpropagating in the plasma are Nd:glass laser light waves and a weak electromagnetic probe wave incident upon the plasma, which is very slightly frequency upshiftedmore » relative to the pump waves. The effects of the frequency and angular detuning between the pump and probe waves, pump wave intensity, and plasma parameters on the reflectivity profiles have been investigated. It is noted that the plasma refractive index significantly affects the reflectivity profiles of the phase conjugate wave. {copyright} {ital 1996 American Institute of Physics.}« less