Super-lightweight mirror for laser fusion produced by porous fused silica

Kunio Yoshida; Hidetsugu Yoshida; Shinji Motokoshi; Sadao Nakai; H. Miyazawa; Yoshiaki Okamoto

doi:10.1117/12.60122

29 July 1992 Super-lightweight mirror for laser fusion produced by porous fused silica

Kunio Yoshida, Hidetsugu Yoshida, Shinji Motokoshi, Sadao Nakai, H. Miyazawa, Yoshiaki Okamoto

Proceedings Volume 1624, Laser-Induced Damage in Optical Materials: 1991; (1992) https://doi.org/10.1117/12.60122
Event: Laser-Induced Damage in Optical Materials: 1991, 1991, Boulder, CO, United States

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 mm^t) were about 1.7 kg and (lambda) /8, respectively. A larger diameter mirror of 530 mm^(phi ) is being fabricated.

Citation Download Citation

Kunio Yoshida, Hidetsugu Yoshida, Shinji Motokoshi, Sadao Nakai, H. Miyazawa, and Yoshiaki Okamoto "Super-lightweight mirror for laser fusion produced by porous fused silica", Proc. SPIE 1624, Laser-Induced Damage in Optical Materials: 1991, (29 July 1992); https://doi.org/10.1117/12.60122

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