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| Naji, M. |
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| Mohamed, Tarek |
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| Azevedo, Nuno Monteiro |
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Esser, Matthew Jan Daniel
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (6/6 displayed)
- 2023Industrial ultrashort pulsed laser welding of copper and titanium to quartz and glass components for optical applications
- 2023Laser surface texturing of structural components for residual stress alleviation during ultrashort pulsed laser welding
- 2021Stress Induced Birefringence of Glass-to-Metal Ultrashort Pulse Welded Components
- 2019High yield ultrafast laser microwelding process for direct joining of metal-to-glass
- 2017Towards industrial ultrafast laser microwelding: SiO2 and BK7 to aluminum alloycitations
- 2016Picosecond laser welding of optical to structural materials
Places of action
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document
Picosecond laser welding of optical to structural materials
Abstract
We report on recent progress to develop an industrially relevant, robust technique to bond highly dissimilar materials using<br/>an ultrashort pulsed laser micro-welding technique. Tight focusing of light from a picosecond (ps) pulsed laser (in our case a<br/>5.9ps, 400kHz Trumpf laser operating at 1030nm) at, close to, the interface between two materials allows for simultaneous heating of both. This absorption rapidly, and locally, heats the material leading to plasma formation from both materials.<br/>With suitable surface preparation this plasma can be confined to the interface region where it mixes, cools and forms a true weld between the two materials. In this presentation I will provide an overview of the ultrashort laser welding process and concentrate on our recent results. Results are presented for fused silica glass to aluminium, copper and stainless steel; borosilicate glass to silicon; and sapphire to stainless steel.