Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6888314 | Optical Fiber Technology | 2018 | 5 Pages |
Abstract
By using chelate precursor doping technique and traditional modified chemical vapor deposition system, we fabricated Yb-doped aluminophosphosilicate (Al2O3-P2O5-SiO2, ternary Yb-APS) large-mode-area fiber and reported on its laser performance. The fiber preform was doped with Al, P and Yb with concentration of â¼8000â¯ppm, â¼1700â¯ppm and â¼400â¯ppm in molar percent, respectively. Tested with master oscillator power amplifier system, the home-made Yb-APS fiber was found to present 1.02â¯kW at 1061.1â¯nm with a high slope efficiency of 81.2% and excellent laser stability with power fluctuation less than ±1.1% for over 10â¯h. Compared with Yb-doped aluminosilicate (Al2O3-SiO2, binary Yb-AS) fiber, the introduction of P2O5 effectively suppressed photodarkening effect even the P/Al ratio is much less than 1, indicating that Yb-APS fiber is a better candidate for high power fiber lasers.
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Authors
Yuwei Li, Kun Peng, Huan Zhan, Shuang Liu, Li Ni, Yuying Wang, Juan Yu, Xiaolong Wang, Jianjun Wang, Feng Jing, Aoxiang Lin,