25 February 2002 High-power high-brightness diode-pumped solid state laser for precise laser processing
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Proceedings Volume 4426, Second International Symposium on Laser Precision Microfabrication; (2002) https://doi.org/10.1117/12.456903
Event: Second International Symposium on Laser Precision Micromachining, 2001, Singapore, Singapore
Abstract
We have proposed a highly efficient and high-brightness quasi-cw Nd:YAG rod laser with a novel-side-pumping design using micro-lens free diode-stacks. We achieved 320W output power with 28-% electrical-to-optical efficiency, which is, to our knowledge, the highest efficiency reported for diode- pumped solid-state lasers. We generated the high quality beam of M2equals4 with the output power of 500W while maintaining the electrical-to-optical efficiency of 20%. We also demonstrated through-hole formation of 1mm thick copper plate using the high brightness laser beam and successfully obtained round holes with the diameter of less than 40 micrometers .
© (2002) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Shuichi Fujikawa, Shuichi Fujikawa, Keisuke Furuta, Keisuke Furuta, Masaki Seguchi, Masaki Seguchi, Tetsuo Kojima, Tetsuo Kojima, Yushi Takenaka, Yushi Takenaka, Koji Yasui, Koji Yasui, "High-power high-brightness diode-pumped solid state laser for precise laser processing", Proc. SPIE 4426, Second International Symposium on Laser Precision Microfabrication, (25 February 2002); doi: 10.1117/12.456903; https://doi.org/10.1117/12.456903
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