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Proceedings Paper

Thermally induced distortion of a high-average-power laser system by an optical transport system
Author(s): Robert Chow; Linda Eve Ault; John R. Taylor; Don Jedlovec
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Paper Abstract

The atomic vapor laser isotope separation process uses high- average power lasers that have the commercial potential to enrich uranium for the electric power utilities. The transport of the laser beam through the laser system to the separation chambers requires high performance optical components, most of which have either fused silica or Zerodur as the substrate material. One of the requirements of the optical components is to preserve the wavefront quality of the laser beam that propagate over long distances. Full aperture tests with the high power process lasers and finite element analysis (FEA) have been performed on the transport optics. The wavefront distortions of the various sections of the transport path were measured with diagnostic Hartmann sensor packages. The FEA results were derived from an in-house thermal-structural- optical code which is linked to the commercially available CodeV program. In comparing the measured and predicted results, the bulk absorptance of fused silica was estimated to about 50 ppm/cm in the visible wavelength regime. Wavefront distortions will be reported on optics made from fused silica and Zerodur substrate materials.

Paper Details

Date Published: 11 November 1999
PDF: 9 pages
Proc. SPIE 3782, Optical Manufacturing and Testing III, (11 November 1999);
Show Author Affiliations
Robert Chow, Lawrence Livermore National Lab. (United States)
Linda Eve Ault, Lawrence Livermore National Lab. (United States)
John R. Taylor, Lawrence Livermore National Lab. (United States)
Don Jedlovec, Lawrence Livermore National Lab. (United States)

Published in SPIE Proceedings Vol. 3782:
Optical Manufacturing and Testing III
H. Philip Stahl, Editor(s)

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