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5 March 2021 4 kW single-mode laser output assisted by a double-tapered double-clad fiber
Yi An, Huan Yang, Xiao Chen, Hu Xiao, Liangjin Huang, Pengfei Ma, Xiaoming Xi, Xiaolin Wang, Pu Zhou, Zhiyong Pan, Zongfu Jiang
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Proceedings Volume 11665, Fiber Lasers XVIII: Technology and Systems; 1166506 (2021) https://doi.org/10.1117/12.2583325
Event: SPIE LASE, 2021, Online Only
Abstract
In this study, we design and fabricate a novel type of active fiber——double-tapered double-clad fiber (DT-DCF). Based on this self-developed DT-DCF, we have constructed an all-fiberized fiber amplifier that is operating under a continuous-wave (CW) regime at 1080 nm wavelength. The maximum output power of the system reaches 4 kW, which, to the best of our knowledge, is the highest output power of tapered fiber-based laser systems. The amplifier exhibits near-single-mode beam quality (M2=1.33) at the highest output power with a slope efficiency of 83%. Our result successfully verifies the potential of power scalability of DT-DCF, and the performance of our system can be further enhanced by fiber design optimization.
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Yi An, Huan Yang, Xiao Chen, Hu Xiao, Liangjin Huang, Pengfei Ma, Xiaoming Xi, Xiaolin Wang, Pu Zhou, Zhiyong Pan, and Zongfu Jiang "4 kW single-mode laser output assisted by a double-tapered double-clad fiber", Proc. SPIE 11665, Fiber Lasers XVIII: Technology and Systems, 1166506 (5 March 2021); https://doi.org/10.1117/12.2583325
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KEYWORDS
Fiber lasers
Amplifiers
Fiber amplifiers
Continuous wave operation
Laser systems engineering
Raman spectroscopy
Semiconductor lasers
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