24 October 2017 High-efficiency fiber-coupled module based on multi-single emitter photonic-band-crystal laser diodes
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Proceedings Volume 10457, AOPC 2017: Laser Components, Systems, and Applications; 104572J (2017) https://doi.org/10.1117/12.2284900
Event: Applied Optics and Photonics China (AOPC2017), 2017, Beijing, China
High-efficiency, high-power and high-brightness, fiber-coupled modules based on semiconductor laser diodes have been important sources in many fields, such as fiber laser pumping, material processing and defense applications. The coupling efficiency of fiber-coupled module has been limited due to the large vertical divergent angle of conventional semiconductor laser diodes. We present a high coupling efficiency module by using photonic-band-crystal (PBC) laser diodes with narrow vertical divergent angle. Fourteen PBC single-emitter laser diodes are combined into a fiber with core diameter of 200 μm and numerical aperture (NA) of 0.22. A high and stability coupling efficiency of 88% and peak otuput power of 47W with the injection current of 5 A are obtained. A comparison with the coupling efficiency of conventional laser diodes module is also presented. And there is a 5% increase of fiber-coupled efficiency based on PBC laser diodes module compared to conventional semiconductor laser diodes module.
© (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yang Chen, Yang Chen, Hongwei Qu, Hongwei Qu, Yufang Zhang, Yufang Zhang, Yufei Wang, Yufei Wang, Xiaolong Ma, Xiaolong Ma, Wanhua Zheng, Wanhua Zheng, } "High-efficiency fiber-coupled module based on multi-single emitter photonic-band-crystal laser diodes", Proc. SPIE 10457, AOPC 2017: Laser Components, Systems, and Applications, 104572J (24 October 2017); doi: 10.1117/12.2284900; https://doi.org/10.1117/12.2284900


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