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Proceedings Paper

Performance of the beamlet laser, a test bed for the national ignition facility
Author(s): Bruno M. Van Wonterghem; John A. Caird; Charles E. Barker; Jack H. Campbell; John R. Murray; David Ralph Speck
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Paper Abstract

We present initial performance studies for beamlet, a single-beam prototype for megajoule- class neodymium-glass laser fusion drivers using a multipass main amplifier, adaptive optics, and efficient, high-fluence conversion to the third harmonic. The beamlet final amplifier uses Brewsters-angle glass slabs with a square 39 by 39 cm2 aperture and a full-aperture plasma-electrode Pockels cell switch. The laser has been tested at the fundamental wavelength over a range of pulselengths from 1 - 10 ns up to energies of 5.8 kJ at 1 ns and 17.3 kJ at 10 ns at a beam area of 35 by 35 cm2. A 39-actuator deformable mirror system corrects the beam to a Strehl ratio of 0.4.

Paper Details

Date Published: 12 April 1996
PDF: 8 pages
Proc. SPIE 2770, Laser Optics '95 and ICONO '95: Superintense Laser Fields, (12 April 1996); doi: 10.1117/12.238023
Show Author Affiliations
Bruno M. Van Wonterghem, Lawrence Livermore National Lab. (United States)
John A. Caird, Lawrence Livermore National Lab. (United States)
Charles E. Barker, Lawrence Livermore National Lab. (United States)
Jack H. Campbell, Lawrence Livermore National Lab. (United States)
John R. Murray, Lawrence Livermore National Lab. (United States)
David Ralph Speck, Lawrence Livermore National Lab. (United States)


Published in SPIE Proceedings Vol. 2770:
Laser Optics '95 and ICONO '95: Superintense Laser Fields
Alexander A. Andreev; Vyacheslav M. Gordienko, Editor(s)

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