High-brightness laser diode module over 300W with 100µm/Na 0.22 fiber

Yohei Kasai; Shinichi Sakamoto; Yukihiko Takahashi; Ken Katagiri; Yuji Yamagata; Akira Sakamoto; Daiichiro Tanaka

doi:10.1117/12.2211985

4 March 2016 High-brightness laser diode module over 300W with 100μm/Na 0.22 fiber

Yohei Kasai, Shinichi Sakamoto, Yukihiko Takahashi, Ken Katagiri, Yuji Yamagata, Akira Sakamoto, Daiichiro Tanaka

Proceedings Volume 9733, High-Power Diode Laser Technology and Applications XIV; 973309 (2016) https://doi.org/10.1117/12.2211985
Event: SPIE LASE, 2016, San Francisco, California, United States

Abstract

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.

Citation Download Citation

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); https://doi.org/10.1117/12.2211985

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