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Proceedings Paper

In-situ optical coatings on subsurface damage-removed substrate
Author(s): Kunio Yoshida; T. Hirao; Tomosumi Kamimura; Kanyoshi Ochi; Schukichi Kaku; Hidetsugu Yoshida; Hisanori Fujita; F. Tani; M. Sunagawa; Yoshiaki Okamoto
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Paper Abstract

The development of high power lasers requires highly damage-resistant optical coatings. Present multilayer dielectric coatings, do not have sufficient laser-induced damage thresholds (LIDTs) to pulsed lasers, particularly in the short wavelength region. LIDT strongly depends on the absorption coefficient of optical coatings and the impurities on the optical substrate. The absorption coefficient of optical coatings can be minimized by optimizing the deposition conditions. However, the impurities on the optical substrate cannot be completely removed by standard optical cleaning techniques. In this paper, the significant improvement of LIDT of optical coatings on subsurface-damage removed fused silica glass due to ion beam etching is presented.

Paper Details

Date Published: 27 May 1996
PDF: 11 pages
Proc. SPIE 2714, 27th Annual Boulder Damage Symposium: Laser-Induced Damage in Optical Materials: 1995, (27 May 1996); doi: 10.1117/12.240412
Show Author Affiliations
Kunio Yoshida, Osaka Institute of Technology (Japan)
T. Hirao, Osaka Institute of Technology (Japan)
Tomosumi Kamimura, Osaka Institute of Technology (Japan)
Kanyoshi Ochi, Osaka Institute of Technology (Japan)
Schukichi Kaku, Osaka Institute of Technology (Japan)
Hidetsugu Yoshida, Osaka Univ. (Japan)
Hisanori Fujita, Osaka Univ. (Japan)
F. Tani, Shinmaywa Industry Co., Ltd. (Japan)
M. Sunagawa, Shinmaywa Industry Co., Ltd. (Japan)
Yoshiaki Okamoto, Okamoto Optics Co. (Japan)

Published in SPIE Proceedings Vol. 2714:
27th Annual Boulder Damage Symposium: Laser-Induced Damage in Optical Materials: 1995
Harold E. Bennett; Arthur H. Guenther; Mark R. Kozlowski; Brian Emerson Newnam; M. J. Soileau, Editor(s)

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