Shu Qiang, Li Chengyu, Lin Honghuan, Huang Zhihua, Wang Bopeng, Liu Yu, Li Zebiao, Guo Chao, Tang Xuan, Zhao Pengfei, Wang Jianjun, Jing Feng. 2 kW Class Antireflection Fiber Laser with Oscillator-Amplifier Integration[J]. Chinese Journal of Lasers, 2018, 45(8): 801004