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VUV photon induced strain free amorphous silica coating with hard protective waterproof property for high power laser optics

Published online by Cambridge University Press:  28 January 2013

Yuji Sato ,
Shinji Motokoshi ,
Masahiro Nakatsuka ,
Yoshiaki Okamoto  and
Masataka Murahara
Yuji Sato
Affiliation:
Institute for Laser Technology1-8-4 Utsubo-honmachi, Nishi-ku, Osaka, 550-0004 Japan,
Shinji Motokoshi
Affiliation:
Institute for Laser Technology1-8-4 Utsubo-honmachi, Nishi-ku, Osaka, 550-0004 Japan,
Masahiro Nakatsuka
Affiliation:
Institute for Laser Technology1-8-4 Utsubo-honmachi, Nishi-ku, Osaka, 550-0004 Japan,
Yoshiaki Okamoto
Affiliation:
Okamoto optics co. ltd 8-34 Haramachi, Isogo-ku, Yokohama, Kanagawa, 235-0008 Japan
Masataka Murahara
Affiliation:
Innovative Research Initiatives, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo, 152-8552 Japan, Tokai University, 4-1-1 Kitakaname, Hiratsuka-shi, Kanagawa, 259-1292 Japan
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Abstract

An amorphous silica film has been coated on a fused silica glass and KH2PO4 [KDP] crystal by using the photo oxidization of Dimethy-siloxane silicone [DMSS] oil by using a xenon [Xe2] excimer lamp at room temperature. The DMSS oil [-O-Si[CH3]2-O-]n was spin-coated on a fused silica glass to make a thin film, and the Xe2 lamp light was vertically irradiated in the presence of oxygen. Thus, the organic oil was changed into inorganic glass. In order to investigate the photochemical reaction process, the fluorescence intensity was measured by spectrometer at actual time and the new method to form a transparent, photo-oxidized thin film efficiently has been established. The interferometer analysis was conducted to investigate the strain of the coating samples. It became clear that the no strain were caused by vitrification of the silicone oil on the fused silica galass with Xe2 lamp irradiation.

Keywords

photochemicalcoatingoptical properties
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1520: Symposium NN – Structure-Property Relations in Amorphous Solids , 2013 , mrsf12-1520-nn09-09
Copyright
Copyright © Materials Research Society 2013

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References

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