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10 May 2023 252 W core-pumped single-frequency all-fiber amplifier at 1064 nm
Yue Tao, Man Jiang, Liu Liu, Can Li, Pu Zhou, Zongfu Jiang
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Proceedings Volume 12554, AOPC 2022: Advanced Laser Technology and Applications; 125540D (2023) https://doi.org/10.1117/12.2651925
Event: Applied Optics and Photonics China 2022 (AOPC2022), 2022, Beijing, China
Abstract
A high-power linearly-polarized all-fiber single-frequency amplifier at 1064 nm based on tandem corepumping is demonstrated by adopting large-mode-area (LMA) fiber with core/cladding diameter of 20/130 μm. The output performance of the amplifier dependence on the input signal power has been investigated, and the results indicate that enhancing the injection signal power is advantageous in mitigating the amplified simultaneous emission (ASE) and increasing slope efficiency. A maximum output power of 252 W with corresponding slope efficiency of 85% is achieved with injection signal power of 7 W. At the highest output power status, a polarization extinction ratio (PER) of 17 dB and a beam quality of 1.15 are obtained respectively. In addition, by virtue of LMA fiber and tandem core-pumping, the amplifier exhibits good performance on thermal load, which in turn facilitate the maintenance of frequency noise and linewidth. To the best of our knowledge, this is the highest output power of single-frequency all-fiber amplifier based on core-pumping scheme.
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Yue Tao, Man Jiang, Liu Liu, Can Li, Pu Zhou, and Zongfu Jiang "252 W core-pumped single-frequency all-fiber amplifier at 1064 nm", Proc. SPIE 12554, AOPC 2022: Advanced Laser Technology and Applications, 125540D (10 May 2023); https://doi.org/10.1117/12.2651925
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KEYWORDS
Optical amplifiers
Amplifiers
Fiber lasers
High power fiber amplifiers
Fiber amplifiers
Polarization
Thermal effects
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