4 March 2016 Picosecond laser welding of optical to metal components
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Proceedings Volume 9736, Laser-based Micro- and Nanoprocessing X; 973615 (2016) https://doi.org/10.1117/12.2213227
Event: SPIE LASE, 2016, San Francisco, California, United States
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.
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Richard M. Carter, Richard M. Carter, Michael Troughton, Michael Troughton, Jinanyong Chen, Jinanyong Chen, Ian Elder, Ian Elder, Robert R. Thomson, Robert R. Thomson, Robert A. Lamb, Robert A. Lamb, M. J. Daniel Esser, M. J. Daniel Esser, Duncan P. Hand, Duncan P. Hand, "Picosecond laser welding of optical to metal components", Proc. SPIE 9736, Laser-based Micro- and Nanoprocessing X, 973615 (4 March 2016); doi: 10.1117/12.2213227; https://doi.org/10.1117/12.2213227
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