title: High power all-fiber amplifier with different seed power injection.
abstract: We report a high power all-fiber amplifier with suitable seed power injected by an all-fiber laser. Different seed powers were injected into the all-fiber amplifier during our amplification experiments, and we found the stimulated Raman scattering (SRS) threshold was inversely proportional to the injected seed power. More than 3 kW signal light with good beam quality (M2= 1.28) has been obtained with a suitable seed power injected, and the slope efficiency of the all-fiber amplifier was about 84.4%.
authors.forename: Jianming
authors.initials: J
authors.lastname: Wang
authors.forename: Dapeng
authors.initials: D
authors.lastname: Yan
authors.forename: Songsong
authors.initials: S
authors.lastname: Xiong
authors.forename: Bao
authors.initials: B
authors.lastname: Huang
authors.forename: Cheng
authors.initials: C
authors.lastname: Li