Martin, I. W. , Steinlechner, J., van Veggel, A.-M. A. , Tornasi, Z., Bell, A. S. , Hough, J. and Rowan, S. (2019) Time-evolution of NIR absorption in hydroxide-catalysis bonds. Materialia, 6, 100331. (doi: 10.1016/j.mtla.2019.100331)
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Abstract
Hydroxide-catalysis bonding is a powerful precision jointing technique. It is used to construct opto-mechanical systems, e.g. in gravitational-wave detectors or satellite-based telescopes, and for optical applications such as high-power laser-crystal assemblies or transmissive optical components. Here we present studies of the optical absorption of such a bond over a period of 38 days after bonding. We find significant absorption at 1550 nm and 2000 nm, while it is negligible at 1064 nm. We show a factor of four reduction in absorption over the observed period, which could increase the tolerable power in transmissive bonded optics. Based on the absorption ratio found at different wavelengths, we conclude that the absorption is most likely dominated by water migrating out of the bond by two mechanisms.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Bell, Dr Angus and Steinlechner, Dr Jessica and Tornasi, Mr Zeno and van Veggel, Dr Marielle and Rowan, Professor Sheila and Martin, Dr Iain and Hough, Professor James |
| Authors: | Martin, I. W., Steinlechner, J., van Veggel, A.-M. A., Tornasi, Z., Bell, A. S., Hough, J., and Rowan, S. |
| College/School: | College of Science and Engineering > School of Physics and Astronomy |
| Research Centre: | College of Science and Engineering > School of Physics and Astronomy > Institute for Gravitational Research |
| Journal Name: | Materialia |
| Publisher: | Elsevier |
| ISSN: | 2589-1529 |
| ISSN (Online): | 2589-1529 |
| Published Online: | 19 April 2019 |
| Copyright Holders: | Copyright © 2019 Acta Materialia Inc. |
| First Published: | First published in Materialia 6:100331 |
| Publisher Policy: | Reproduced under a Creative Commons License |
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