Laser microspot welding of copper
Source abstract
Abstract
We describe a novel procedure for highly reliable microspot welding of copper based on a calibrated on-line reflectivity measurement. This parameter is used to control the laser power slope and the weld spot diameter. Reliable welds are obtained without the need of other active control mechanisms. The new technique allows realizing welds with a diameter close to the laser beam waist and leads to a reduction in the relative standard deviation of the molten pool diameter from 20% to about 3%.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Welding Techniques and Residual Stresses · Laser-induced spectroscopy and plasma · Laser Material Processing Techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Advanced Photonics Laboratory, Ecole Polytechnique Fédérale de Lausanne, Switzerland
LASAG AG, Thun, Switzerland
References (11)
Show source-provided references
1. Tech. Phys. · 1968 · 13 · 640
2. Appl. Phys. Lett. · 1978 · 33 · 78610.1063/1.90505 ↗
3. Phys. Scr., T · 1986 · T13 · 13910.1088/0031-8949/1986/T13/023 ↗
4. J. Laser Appl. · 2003 · 15 · 1110.2351/1.1538245 ↗
5. Photon Processing in Microelectronics and Photonics, San Jose, CA
6. Photonics West, Santa Clara, California, January 2003
7. First International Symposium on Laser Precision Microfabrication, Omiya, Japan, 14–16 June 2000
8. 4th International Symposium on Laser Precision Microfabrication, Munich, Germany, June 2003
9. First International Symposium on Laser Precision Microfabrication, Omiya, Japan, 14–16 June, 2000
10. J. Laser Appl. · 1997 · 9 · 7710.2351/1.4745447 ↗
11. J. Appl. Phys. · 1997 · 81 · 659910.1063/1.365198 ↗