MEASUREMENTS OF LASER-SPECKLE-INDUCE PERTURBATIONS IN LASER-DRIVEN FOILS

Authors
GLENDINNING SG DIXIT SN HAMMEL BA KALANTAR DH KEY MH KILKENNY JD KNAUER JP PENNINGTON DM REMINGTON BA WALLACE RJ WEBER SV
Citation
Sg. Glendinning et al., MEASUREMENTS OF LASER-SPECKLE-INDUCE PERTURBATIONS IN LASER-DRIVEN FOILS, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 54(4), 1996, pp. 4473-4475
Citations number
14
Categorie Soggetti
Physycs, Mathematical","Phsycs, Fluid & Plasmas
Journal title
Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics → ACNP
ISSN journal
1063651X
Volume
54
Issue
4
Year of publication
1996
Part
B
Pages
4473 - 4475
Database
ISI
SICI code
1063-651X(1996)54:4<4473:MOLPIL>2.0.ZU;2-E
Abstract
We have measured modulations imprinted by laser speckle in laser-drive n CH2 foils at 10(14) W/cm(2) (laser wavelength 0.53 mu m). We have ca librated the amplitude and Rayleigh-Taylor growth of these modulations with single-mode surface perturbations, converting the imprint to an equivalent surface finish. We examined this imprint for a static speck le pattern and with two different bandwidths on the drive laser. The a ddition of bandwidth and dispersion to the drive laser reduced the imp rinted modulations, with the highest bandwidth showing the largest red uction in imprint, in agreement with LASNEX simulations.