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Proceedings Paper

Wavefront and divergence of the Beamlet prototype laser
Author(s): Paul J. Wegner; Mark A. Henesian; J. Thaddeus Salmon; Lynn G. Seppala; Timothy L. Weiland; Wade H. Williams; Bruno M. Van Wonterghem
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Paper Abstract

We have measured the wavefront and the divergence of the Beamlet prototype laser under a variety of conditions. Emphasis of the tests was on quantifying best attainable divergence in the angular regime below 30 (mu) rad to benchmark propagation models that are used to set wavefront gradient specifications for NIF optical components. Performance with and without active wavefront correction was monitored with radial shearing interferometers that measured near-field wavefront at the input and output of the main amplifier with a spatial resolution of 1 cm, and cameras which measured the corresponding intensity distributions in the far field with an angular resolution of 0.3 (Mu) rad. Details of the measurements are discussed and related to NIF focal spot requirements and optics specifications.

Paper Details

Date Published: 23 July 1999
PDF: 12 pages
Proc. SPIE 3492, Third International Conference on Solid State Lasers for Application to Inertial Confinement Fusion, (23 July 1999); doi: 10.1117/12.354256
Show Author Affiliations
Paul J. Wegner, Lawrence Livermore National Lab. (United States)
Mark A. Henesian, Lawrence Livermore National Lab. (United States)
J. Thaddeus Salmon, Lawrence Livermore National Lab. (United States)
Lynn G. Seppala, Lawrence Livermore National Lab. (United States)
Timothy L. Weiland, Lawrence Livermore National Lab. (United States)
Wade H. Williams, Lawrence Livermore National Lab. (United States)
Bruno M. Van Wonterghem, Lawrence Livermore National Lab. (United States)


Published in SPIE Proceedings Vol. 3492:
Third International Conference on Solid State Lasers for Application to Inertial Confinement Fusion
W. Howard Lowdermilk, Editor(s)

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