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We demonstrate the use of Variable Beam Profile (VBP) lasers for welding e-mobility materials. The VBP laser uses dual beam output to produce a central spot, surrounded by another concentric ring of laser light. The use of VBP lasers results in a welding process that is more stable and consistent during welding.
This paper highlights welding results achieved using a VBP fibre laser, with power ranging from 6kW to 12kW on weld joints including dissimilar joints between copper and aluminium-based alloys. Results from VBP lasers are compared with those obtained via e.g. pulse shaping of traditional single beam lasers.
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Mohammed Naeem, Jason Zhou, Jia Li, Shuming Chang, Chih-Hao Wang, Imtiaz Majid, "Laser welding of e-mobility materials with variable beam profile lasers and pulse shaping," Proc. SPIE PC12414, High-Power Laser Materials Processing: Applications, Diagnostics, and Systems XII, PC1241408 (17 March 2023); https://doi.org/10.1117/12.2650763