| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Carter, Richard
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (16/16 displayed)
- 2024Ultra-short pulsed laser welding of crystals, glasses, metals, and more
- 20233D Laser Beam Shaping for Manufacturing within Volumes
- 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
- 2018Laser-based fabrication of microfluidic devices for porous media applicationscitations
- 2018Rapid Laser Manufacturing of Microfluidic Devices from Glass Substratescitations
- 2017Towards industrial ultrafast laser microwelding: SiO2 and BK7 to aluminum alloycitations
- 2017Fabrication of three-dimensional micro-structures in glass by picosecond laser micro-machining and welding
- 2016Characterisation of weld zone reactions in dissimilar glass-to-aluminium pulsed picosecond laser weldscitations
- 2016Picosecond laser welding of optical to structural materials
- 2016Surface Separation Investigation of Ultrafast Pulsed Laser Welding
- 2014Picosecond laser welding of similar and dissimilar materialscitations
- 2012Modelling of Long Period Gratings with Metallic (Pd) Jacket
- 2009All Fibre based Hydrogen Sensing using Palladium coated Long Period Gratings
Places of action
| Organizations | Location | People |
|---|
document
Industrial ultrashort pulsed laser welding of copper and titanium to quartz and glass components for optical applications
Abstract
Ultrashort pulsed laser welding of dissimilar materials is becoming an attractive alternative technique to currently used adhesive bonding for metal-glass components in the manufacture of optical and laser systems. This laser welding process relies on the very high peak intensity from a laser beam that is tightly focused through the top of the transmissive optical component (glass) to provide a focal spot in the vicinity of the metal-glass interface. Non-linear multi-photon absorption results in the generation of free electrons in a highly localised focal volume, leading to plasma formation. For a successful weld, the laser pulse repetition rate must be sufficiently high to also provide thermal accumulation, resulting in a localised melt volume (heat affected zone (HAZ)) surrounding the small plasma. The size of this HAZ depends on the laser parameters used and can be modified to be smaller than 100 µm. As the laser spot translates across the material, this highly localized melt zone solidifies behind the beam and forms a strong bond (micro weld) between the two surfaces. <br/>We present our recent findings on the influence of laser process parameters such as; pulse duration and the use of burst mode; and the effect of material properties such as surface texture. We will also present results quantifying the effect of mismatch in coefficients of thermal expansion on the residual stress of optical components (quartz or glass) welded to structural (metal) components using the ultrashort pulse laser welding technique. The technique is based on the use of an ultrashort (260fs-5ps) pulsed Amplitude laser operating at 1030nm and 500 kHz. <br/>The results from the shear strength tests and accelerated lifetime tests of ultrashort laser pulse welded components will also be presented. <br/>