Chinese Optics Letters, 2017, 15 (7): 071407, Published Online: Jul. 20, 2018
307 W high-power 1018 nm monolithic tandem pump fiber source with effective thermal management
Abstract
We report a 307 W 1018 nm Yb-doped fiber laser pumped by a single 976 nm laser diode. The cavity slope efficiency is up to 75.9% and the amplified spontaneous emission is suppressed by 54 dB. The beam quality of the output laser has an M 2 factor of 1.17. Effective thermal management is considered to ensure the stable operation of our system. The power stability at the maximum output power level is measured during a period of 0.5 h and the power fluctuation is less than 0.8%. This architecture can be an effective high brightness pump source of core-pumping high-power fiber amplifiers.
Xiaolong Chen, Jianhua Wang, Xiang Zhao, Gang Bai, Weichao Gong, Kai Liu, Chun Zhao, Xuan Li, Haoyang Pi, Jinyan Li, Yifeng Yang, Bing He, Jun Zhou. 307 W high-power 1018 nm monolithic tandem pump fiber source with effective thermal management[J]. Chinese Optics Letters, 2017, 15(7): 071407.