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Proceedings Paper

Photochemical adhesion of fused silica glass for UV transmittance
Author(s): Masataka M. Murahara; Takayuki Funatsu; Yoshiaki Okamoto
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Paper Abstract

The new, strong adhesion method has been developed for optical materials to transmit vacuum ultraviolet rays by using silicone oil. Silicone oil (dimethyl siloxane) has the main chain of siloxane bonds like quartz and the side chains of methyl group. By irradiating ultraviolet rays in oxygen atmosphere, the organic silicone oil was photo-oxidized and changed into inorganic glass. The silicone oil was poured into the thin gap between two pieces of silica glass in oxygen atmosphere and irradiated with the Xe2 excimer lamp. Consequently, the siloxane of the silicone oil was bonded with the O atoms that had been absorbed on the glass surface to form SiO2. The UV transmittance of the silicone oil was improved by 62%, from 30% before the lamp irradiation to 92% after the 60-minute irradiation. Furthermore, the adhesive strength of the silicone oil was enhanced from 0 kgf/cm2 before the irradiation to 180 kgf/cm2 after the irradiation. The honeycomb structure board and plane mirrors were adhered with the Xe2 excimer lamplight and photo-oxidized silicone oil.

Paper Details

Date Published: 21 February 2005
PDF: 8 pages
Proc. SPIE 5647, Laser-Induced Damage in Optical Materials: 2004, (21 February 2005); doi: 10.1117/12.588385
Show Author Affiliations
Masataka M. Murahara, Tokai Univ. (Japan)
Takayuki Funatsu, Tokai Univ. (Japan)
Yoshiaki Okamoto, Okamoto Optics Co. (Japan)

Published in SPIE Proceedings Vol. 5647:
Laser-Induced Damage in Optical Materials: 2004
Gregory J. Exarhos; Arthur H. Guenther; Norbert Kaiser; Keith L. Lewis; M. J. Soileau; Christopher J. Stolz, Editor(s)

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