Laser smoothing and imprint reduction with a foam layer in the multikilojoule regime

S Depierreux, C Labaune, DT Michel, C Stenz… - Physical review …, 2009 - APS
This Letter presents first experimental results of the laser imprint reduction in fusion scale
plasmas using a low-density foam layer. The experiments were conducted on the LIL facility …

Beam spray thresholds in ICF-relevant plasmas

D Turnbull, J Katz, DE Hinkel, P Michel, T Chapman… - Physical Review Letters, 2022 - APS
Beam spray measurements suggest thresholds that are a factor of≈ 2 to 15× less than
expected based on the filamentation figure of merit often quoted in the literature. In this …

Observation and modelling of stimulated Raman scattering driven by an optically smoothed laser beam in experimental conditions relevant for shock ignition

G Cristoforetti, S Hüller, P Koester… - High Power Laser …, 2021 - cambridge.org
We report results and modelling of an experiment performed at the Target Area West Vulcan
laser facility, aimed at investigating laser–plasma interaction in conditions that are of interest …

[HTML][HTML] Crossed beam energy transfer in the presence of laser speckle ponderomotive self-focusing and nonlinear sound waves

S Hüller, G Raj, W Rozmus, D Pesme - Physics of Plasmas, 2020 - pubs.aip.org
Crossed beam energy transfer, CBET, is investigated by taking into account the speckle
structure of smoothed laser beams that overlap in a plasma with an inhomogeneous flow …

[HTML][HTML] Simulating the filamentation of smoothed laser beams with three-dimensional nonlinear dynamics

LJ Babati, WA Farmer, RL Berger, MA Belyaev… - AIP Advances, 2022 - pubs.aip.org
In a plasma, the ponderomotive force of an inhomogeneous electromagnetic field expels
plasma from regions of high intensity. When a laser propagates through a plasma, this force …

Langmuir decay instability cascade in laser-plasma experiments

S Depierreux, C Labaune, J Fuchs, D Pesme… - Physical review …, 2002 - APS
Thomson scattering has been used to investigate the nonlinear evolution of electron plasma
waves (EPWs) generated by stimulated Raman scattering (SRS). Two complementary …

[HTML][HTML] Impact of spatiotemporal smoothing on the two-plasmon–decay instability

D Turnbull, AV Maximov, D Cao… - Physics of …, 2020 - pubs.aip.org
Higher levels of hot electrons from the two-plasmon–decay instability are observed when
smoothing by spectral dispersion (SSD) is turned off in directly driven inertial confinement …

Influence of a random phase plate on the growth of the backward stimulated Brillouin scatter

C Ruyer, A Fusaro, A Debayle, R Capdessus… - Physical Review E, 2023 - APS
We derive the analytical dispersion relation of a high-energy laser beam's backward
stimulated Brillouin scattering (BSBS) in a hot plasma, that accounts both for the random …

Laser–plasma interaction studies in the context of megajoule lasers for inertial fusion

D Pesme, S Hüller, J Myatt, C Riconda… - Plasma physics and …, 2002 - iopscience.iop.org
Laser–plasma interaction (LPI) physics is one the major issues for the realization of inertial
fusion. Parametric instabilities may be driven by the incident laser beams during their …

Laser-beam smoothing induced by stimulated Brillouin scattering in an inhomogeneous plasma

P Loiseau, O Morice, D Teychenné, M Casanova… - Physical review …, 2006 - APS
We present results of two-dimensional simulations of the stimulated Brillouin scattering
(SBS) of an optically smoothed laser beam propagating in an expanding plasma. In the …