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Proceedings Paper

Third-harmonic performance of the Beamlet prototype laser
Author(s): Paul J. Wegner; Charles E. Barker; John A. Caird; Sham N. Dixit; Mark A. Henesian; Lynn G. Seppala; Calvin E. Thompson; Bruno M. Van Wonterghem
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Paper Abstract

The Beamlet laser is a nearly full-scale, single-aperture prototype of the driver design for the National Ignition Facility (NIF). As part of a test and validation plan for the NIF design, Beamlet was recently equipped with final focusing optics and diagnostics for the purpose of evaluating integrated component performance and equivalent target-plane irradiance conditions at the 0.351-micrometers output wavelength specified for NIF targets. A 37-cm aperture two- crystal converter scheme generates the third harmonic of the Nd:glass 1.053-micrometers wavelength with high efficiency. The efficiency of the converter has been characterized and is reported, along with detailed measurements of the near-field and far-field UV irradiance distributions at operating conditions up to and exceeding red-line levels for the NIF. Dependences of observed beam quality on critical laser parameters including output power, B-integral, and spatial filtering are discussed and compared with numerical simulations.

Paper Details

Date Published: 8 December 1997
PDF: 11 pages
Proc. SPIE 3047, Solid State Lasers for Application to Inertial Confinement Fusion: Second Annual International Conference, (8 December 1997); doi: 10.1117/12.294323
Show Author Affiliations
Paul J. Wegner, Lawrence Livermore National Lab. (United States)
Charles E. Barker, Lawrence Livermore National Lab. (United States)
John A. Caird, Lawrence Livermore National Lab. (United States)
Sham N. Dixit, Lawrence Livermore National Lab. (United States)
Mark A. Henesian, Lawrence Livermore National Lab. (United States)
Lynn G. Seppala, Lawrence Livermore National Lab. (United States)
Calvin E. Thompson, Lawrence Livermore National Lab. (United States)
Bruno M. Van Wonterghem, Lawrence Livermore National Lab. (United States)


Published in SPIE Proceedings Vol. 3047:
Solid State Lasers for Application to Inertial Confinement Fusion: Second Annual International Conference
Michel L. Andre, Editor(s)

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