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4 March 2016 High-brightness laser diode module over 300W with 100μm/Na 0.22 fiber
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High-brightness laser diode module over 300 W with 100 μm core/NA 0.22 fiber has been developed by integrating the several tens of optimally designed single emitter laser diodes in a newly designed package. We employed the Asymmetric Decoupled Confinement Heterostructure (ADCH) and the wide strip width to increase the durability for the catastrophic optical damage. High fiber-coupling efficiency was obtained with the uniquely designed micro-optical system. In addition, low thermal resistance made it possible to operate higher power. As a result, 300 W power was achieved without thermal rollover at 15.5 A with significantly high reliability. The high-brightness modules have a great advantage for high power fiber lasers such as 10 kW and beyond.
© (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yohei Kasai, Shinichi Sakamoto, Yukihiko Takahashi, Ken Katagiri, Yuji Yamagata, Akira Sakamoto, and Daiichiro Tanaka "High-brightness laser diode module over 300W with 100μm/Na 0.22 fiber", Proc. SPIE 9733, High-Power Diode Laser Technology and Applications XIV, 973309 (4 March 2016);

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