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15 October 2015 Design of a kW-output fiber coupled diode laser system
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Proceedings Volume 9671, AOPC 2015: Advances in Laser Technology and Applications; 967112 (2015)
Event: Applied Optics and Photonics China (AOPC2015), 2015, Beijing, China
Fiber-coupled diode laser pumping source is one of the key components of high-power fiber laser system. Its performance is significant to the output power of fiber laser system. A 1.8kW fiber-coupled diode laser system is designed by using ZEMAX optical design software. The technologies of high-precision beam collimation, spatial multiplexing, polarization multiplexing, beam expanding, focusing and coupling are used to couple the beams of 42 diode laser bars into a fiber with a core diameter of 200μm and NA 0.22. Every beam emit from diode laser bar is single polarization, and its central wavelength is 976nm @ 55W. The desigh result showed the fiber output power could reach 1800W, and the fiber-coupling efficiency was 78%, the brightness was 37MW/(cm2·sr),corresponding. This fiber-coupled system can be used in fiber pumping, material process and many other areas.
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Hualing Wu, Linhui Guo, Junhong Yu, Songxin Gao, and Deyong Wu "Design of a kW-output fiber coupled diode laser system", Proc. SPIE 9671, AOPC 2015: Advances in Laser Technology and Applications, 967112 (15 October 2015);

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