High-efficiency metallic diffraction gratings for laser applications
- Laser Program, L-493, Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550 (United States)
- Optical Sciences Center, University of Arizona, Tucson, Arizona 85721 (United States)
The design and fabrication of large-area, high-efficiency metallic gratings for use in high-power laser systems is described. The gratings exhibit a diffraction efficiency in excess of 95% in the {ital m} = {minus}1 order (Littrow mount) and have a high threshold for laser damage. Computations and experimental measurements are presented that illustrate the effect of grating shape and polarization on efficiency. A simple theory for optical damage to metallic diffraction gratings is developed and compared with experimental measurements of the laser-damage threshold over the pulse range from 400 fs to over 1 ns.
- Research Organization:
- Lawrence Livermore National Laboratory
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 54906
- Journal Information:
- Applied Optics, Journal Name: Applied Optics Journal Issue: 10 Vol. 34; ISSN APOPAI; ISSN 0003-6935
- Country of Publication:
- United States
- Language:
- English
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