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Proceedings Paper

Picosecond laser welding of optical to metal components
Author(s): Richard M. Carter; Michael Troughton; Jinanyong Chen; Ian Elder; Robert R. Thomson; Robert A. Lamb; M. J. Daniel Esser; Duncan P. Hand
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Paper Abstract

We report on practical, industrially relevant, welding of optical components to themselves and aluminum alloy components. Weld formation is achieved through the tight focusing of a 5.9ps, 400kHz Trumpf laser operating at 1030nm. By selecting suitable surface preparation, clamping and laser parameters, the plasma can be confined, even with comparatively rough surfaces, by exploiting the melt properties of the glass. The short interaction time allows for a permanent weld to form between the two materials with heating limited to a region ~300 µm across. Practical application of these weld structures is typically limited due to the induced stress within the glass and, critically, the issues surrounding post-weld thermal expansion. We report on the measured strength of the weld, with a particular emphasis on laser parameters and surface preparation.

Paper Details

Date Published: 4 March 2016
PDF: 10 pages
Proc. SPIE 9736, Laser-based Micro- and Nanoprocessing X, 973615 (4 March 2016); doi: 10.1117/12.2213227
Show Author Affiliations
Richard M. Carter, Heriot-Watt Univ. (United Kingdom)
Michael Troughton, Finmeccenica Airborne & Space Systems (United Kingdom)
Jinanyong Chen, Heriot-Watt Univ. (United Kingdom)
Ian Elder, Finmeccenica Airborne & Space Systems (United Kingdom)
Robert R. Thomson, Heriot-Watt Univ. (United Kingdom)
Robert A. Lamb, Finmeccenica Airborne & Space Systems (United Kingdom)
M. J. Daniel Esser, Heriot-Watt Univ. (United Kingdom)
Duncan P. Hand, Heriot-Watt Univ. (United Kingdom)

Published in SPIE Proceedings Vol. 9736:
Laser-based Micro- and Nanoprocessing X
Udo Klotzbach; Kunihiko Washio; Craig B. Arnold, Editor(s)

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