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Proceedings Paper

NIF optical materials and fabrication technologies: an overview
Author(s): John H. Campbell; Ruth A. Hawley-Fedder; Christopher J. Stolz; Joseph A. Menapace; Michael R. Borden; Pamela K. Whitman; June Yu; Michael J. Runkel; Michael O. Riley; Michael D. Feit; Richard P. Hackel
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Paper Abstract

The high-energy/high-power section of the NIF laser system contains 7360 meter-scale optics. Advanced optical materials and fabrication technologies needed to manufacture the NIF optics have been developed and put into production at key vendor sites. Production rates are up to 20 times faster and per-optic costs 5 times lower than could be achieved prior to the NIF. In addition, the optics manufactured for NIF are better than specification giving laser performance better than the design. A suite of custom metrology tools have been designed, built and installed at the vendor sites to verify compliance with NIF optical specifications. A brief description of the NIF optical wavefront specifications for the glass and crystal optics is presented. The wavefront specifications span a continuous range of spatial scale-lengths from 10 μm to 0.5 m (full aperture). We have continued our multi-year research effort to improve the lifetime (i.e. damage resistance) of bulk optical materials, finished optical surfaces and multi-layer dielectric coatings. New methods for post-processing the completed optic to improve the damage resistance have been developed and made operational. This includes laser conditioning of coatings, glass surfaces and bulk KDP and DKDP and well as raster and full aperture defect mapping systems. Research on damage mechanisms continues to drive the development of even better optical materials.

Paper Details

Date Published: 28 May 2004
PDF: 18 pages
Proc. SPIE 5341, Optical Engineering at the Lawrence Livermore National Laboratory II: The National Ignition Facility, (28 May 2004); doi: 10.1117/12.538471
Show Author Affiliations
John H. Campbell, Lawrence Livermore National Lab. (United States)
Ruth A. Hawley-Fedder, Lawrence Livermore National Lab. (United States)
Christopher J. Stolz, Lawrence Livermore National Lab. (United States)
Joseph A. Menapace, Lawrence Livermore National Lab. (United States)
Michael R. Borden, Lawrence Livermore National Lab. (United States)
Pamela K. Whitman, Lawrence Livermore National Lab. (United States)
June Yu, Lawrence Livermore National Lab. (United States)
Michael J. Runkel, Lawrence Livermore National Lab. (United States)
Michael O. Riley, Lawrence Livermore National Lab. (United States)
Michael D. Feit, Lawrence Livermore National Lab. (United States)
Richard P. Hackel, Lawrence Livermore National Lab. (United States)


Published in SPIE Proceedings Vol. 5341:
Optical Engineering at the Lawrence Livermore National Laboratory II: The National Ignition Facility
Monya A. Lane; Craig R. Wuest, Editor(s)

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