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7 April 1999 Manufacture, optical performance, and laser damage characteristics of diffractive optics for the National Ignition Facility
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Abstract
We have fabricated demonstration diffractive optic plates at full scale for the NIF laser. These include an off-axis focusing beam sampling grating, a color separation grating, and a kinoform phase plate for spatial beam smoothing. Fabrication methods and optical performance of these DOPs are discussed. IT was discovered that the sol-gel antireflective coating normally applied to high-power transmissive optics partially planarizes the diffractive structures, particularly on the color separation grating used for color management at target, to the extent that optical performance and laser damage threshold are negatively impacted. The effect of sol-gel coatings on grating performance, the feasibility of placing all diffractive structures on a single surface, and future work in this area are discussed.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jerald A. Britten, Steve M. Herman, Leslie J. Summers, Michael C. Rushford, Lun Auyang, I. M. Barton, Bruce W. Shore, Sham N. Dixit, Thomas G. Parham, Curly R. Hoaglan, Charles T. Thompson Jr., Colin L. Battersby, J. M. Yoshiyama, and Ron P. Mouser "Manufacture, optical performance, and laser damage characteristics of diffractive optics for the National Ignition Facility", Proc. SPIE 3578, Laser-Induced Damage in Optical Materials: 1998, (7 April 1999); https://doi.org/10.1117/12.344461
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