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Proceedings Paper

Laser materials processing applications at Lawrence Livermore National Laboratory
Author(s): R. Steven Hargrove; Ernest P. Dragon; Richard P. Hackel; Douglas D. Kautz; Bruce E. Warner
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Paper Abstract

Copper and dye laser systems are currently being developed at LLNL for uranium enrichment production facilities. The goals of this program are to develop low-cost, reliable and maintainable industrial laser systems. Chains of copper lasers currently operate at more than 1.5 kW output and achieve mean time between failures of more than 1000 hours. The beam quality of copper vapor lasers is approximately three times the diffraction limit. Dye lasers have near diffraction limited beam quality at greater than 1.0 kW. Diode laser pumped, Nd:YAG slab lasers are also being developed at LLNL. Current designs achieve powers of greater than 1.0 kW and projected beam quality is in the two to five times diffraction limited range. Results from cutting and drilling studies in titanium and stainless steel alloys show that cuts and holes with extremely fine features can be made with dye and copper-vapor lasers. High radiance beams produce low distortion and small heat-affected zones. We have accomplished very high aspect ratio holes in drilling tests (> 60:1) and features with micron scale (5 - 50 micrometers ) sizes.

Paper Details

Date Published: 28 May 1993
PDF: 10 pages
Proc. SPIE 1859, Laser Isotope Separation, (28 May 1993); doi: 10.1117/12.145504
Show Author Affiliations
R. Steven Hargrove, Lawrence Livermore National Lab. (United States)
Ernest P. Dragon, Lawrence Livermore National Lab. (United States)
Richard P. Hackel, Lawrence Livermore National Lab. (United States)
Douglas D. Kautz, Lawrence Livermore National Lab. (United States)
Bruce E. Warner, Lawrence Livermore National Lab. (United States)

Published in SPIE Proceedings Vol. 1859:
Laser Isotope Separation
Jeffrey A. Paisner, Editor(s)

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