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Proceedings Paper

Super-lightweight mirror for laser fusion produced by porous fused silica
Author(s): Kunio Yoshida; Hidetsugu Yoshida; Shinji Motokoshi; Sadao Nakai; H. Miyazawa; Yoshiaki Okamoto
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Paper Abstract

We have developed a super-lightweight mirror usable for laser fusion for the first time. The porous fused silica with density of 0.2 g/cm3 was sandwiched between two fused silica plates. The porous silica and the fused silica plates were contacted under high temperature of about 1500 - 1600 degree(s)C. The weight and optical flatness of the mirror (3500 mm(phi ) X 36 mmt) were about 1.7 kg and (lambda) /8, respectively. A larger diameter mirror of 530 mm(phi ) is being fabricated.

Paper Details

Date Published: 29 July 1992
PDF: 6 pages
Proc. SPIE 1624, Laser-Induced Damage in Optical Materials: 1991, (29 July 1992); doi: 10.1117/12.60122
Show Author Affiliations
Kunio Yoshida, Osaka Univ. (Japan)
Hidetsugu Yoshida, Osaka Univ. (Japan)
Shinji Motokoshi, Osaka Univ. (Japan)
Sadao Nakai, Osaka Univ. (Japan)
H. Miyazawa, Shin-Etsu Quartz Products Co., Ltd. (Japan)
Yoshiaki Okamoto, Okamoto Optics Co. (Japan)

Published in SPIE Proceedings Vol. 1624:
Laser-Induced Damage in Optical Materials: 1991
Harold E. Bennett; Lloyd L. Chase; Arthur H. Guenther; Brian Emerson Newnam; M. J. Soileau, Editor(s)

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