980-nm all-fiber mode-locked Yb-doped phosphate fiber oscillator based on semiconductor saturable absorber mirror and its amplifier
Li Ping-Xue†, 
, Yao Yi-Fei, Chi Jun-Jie, Hu Hao-Wei, Zhang Guang-Ju, Liang Bo-Xing, Zhang Meng-Meng, Ma Chun-Mei, Su Ning
, Yao Yi-Fei, Chi Jun-Jie, Hu Hao-Wei, Zhang Guang-Ju, Liang Bo-Xing, Zhang Meng-Meng, Ma Chun-Mei, Su Ning Output spectrum of 980-nm mode-locked fiber laser at 20.96-MHz repetition rate.
