Infrared and Laser Engineering, Volume. 45, Issue 6, 606003(2016)
500 W fiber-coupled semiconductor laser module
The semiconductor laser is widely used in industrial fields, and fiber coupling enables flexible transmission. Accordingly, a 500 W high-efficiency fiber-coupled module was designed. The technologies of beam shaping, spatial multiplexing, polarization multiplexing and fiber coupling were used to couple ten bars into a laser beam. Ten bars were collimated by fast axis collimation lens. Then the beams were transformed, and collimated by slow axis collimation optics. And then the beam were combined. All the beam were focused into a multimode fiber(400 μm core diameter, NA=0.22) after expanding. Experimental results show that the laser output from the module can reach to 545 W in the current of 70 A, corresponding the laser output from fiber could reach to 518 W. High coupling efficiency as 95% was obtained, electro-optic conversion efficiency is 43%, which makes a foundation for kilowatt fiber-coupling semiconductor laser.
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Xu Dan, Huang Xuesong, Jiang Menghua, Hui Yongling, Lei Hong, Li Qiang. 500 W fiber-coupled semiconductor laser module[J]. Infrared and Laser Engineering, 2016, 45(6): 606003
Category: 激光技术及应用
Received: Oct. 5, 2015
Accepted: Nov. 8, 2015
Published Online: Jul. 26, 2016
The Author Email: Dan Xu (llm8984@163.com)