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Laser uniformity and hydrodynamic stability experiments at the OMEGA laser facility

Published online by Cambridge University Press:  02 March 2001

T.R. BOEHLY ,
A. BABUSHKIN ,
D.K. BRADLEY ,
R.S. CRAXTON ,
J.A. DELETTREZ ,
R. EPSTEIN ,
T.J. KESSLER ,
J.P. KNAUER ,
R.L. McCRORY  and
P.W. McKENTY
...Show all authors
T.R. BOEHLY
Affiliation:
University of Rochester, Laboratory for Laser Energetics, 250 East River Road, Rochester, NY 14623
A. BABUSHKIN
Affiliation:
University of Rochester, Laboratory for Laser Energetics, 250 East River Road, Rochester, NY 14623
D.K. BRADLEY
Affiliation:
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, CA 94550
R.S. CRAXTON
Affiliation:
University of Rochester, Laboratory for Laser Energetics, 250 East River Road, Rochester, NY 14623
J.A. DELETTREZ
Affiliation:
University of Rochester, Laboratory for Laser Energetics, 250 East River Road, Rochester, NY 14623
R. EPSTEIN
Affiliation:
University of Rochester, Laboratory for Laser Energetics, 250 East River Road, Rochester, NY 14623
T.J. KESSLER
Affiliation:
University of Rochester, Laboratory for Laser Energetics, 250 East River Road, Rochester, NY 14623
J.P. KNAUER
Affiliation:
University of Rochester, Laboratory for Laser Energetics, 250 East River Road, Rochester, NY 14623
R.L. McCRORY
Affiliation:
University of Rochester, Laboratory for Laser Energetics, 250 East River Road, Rochester, NY 14623
P.W. McKENTY
Affiliation:
University of Rochester, Laboratory for Laser Energetics, 250 East River Road, Rochester, NY 14623
D.D. MEYERHOFER
Affiliation:
University of Rochester, Laboratory for Laser Energetics, 250 East River Road, Rochester, NY 14623
S. REGAN
Affiliation:
University of Rochester, Laboratory for Laser Energetics, 250 East River Road, Rochester, NY 14623
W. SEKA
Affiliation:
University of Rochester, Laboratory for Laser Energetics, 250 East River Road, Rochester, NY 14623
S. SKUPSKY
Affiliation:
University of Rochester, Laboratory for Laser Energetics, 250 East River Road, Rochester, NY 14623
V.A. SMALYUK
Affiliation:
University of Rochester, Laboratory for Laser Energetics, 250 East River Road, Rochester, NY 14623
R.P.J. TOWN
Affiliation:
University of Rochester, Laboratory for Laser Energetics, 250 East River Road, Rochester, NY 14623
B. YAAKOBI
Affiliation:
University of Rochester, Laboratory for Laser Energetics, 250 East River Road, Rochester, NY 14623
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Abstract

Experiments to demonstrate the effects of various beam-smoothing techniques have been performed on the 60-beam, 30-kJ UV OMEGA laser system. These include direct measurements of the effect beam-smoothing techniques have on laser beam nonuniformity and on both planar and spherical targets. Demonstrated techniques include polarization smoothing and “dual-tripler” third-harmonic generation required for future broad bandwidth (∼1 THz) smoothing by spectral dispersion (SSD). The effects of improvements in single-beam uniformity are clearly seen in the target-physics experiments, which also show the effect of the laser pulse shape on the efficacy of SSD smoothing. Saturation of the Rayleigh-Taylor (RT) growth of the broad-bandwidth features, in agreement with the Haan model (Haan, 1989), produced by laser imprinting has also been observed.

Type
ECLIM '98 PAPERS
Information
Laser and Particle Beams , Volume 18 , Issue 1 , January 2000 , pp. 11 - 19
Copyright
© 2000 Cambridge University Press

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