title: Single-frequency fiber laser at 1950 nm based on thulium-doped silica fiber.
abstract: A single-frequency fiber laser operating at 1950 nm has been demonstrated in an all-fiber distributed Bragg reflection laser cavity by using a 1.9 cm commercially available thulium-doped silica fiber, for the first time, to the best of our knowledge. The laser was pumped by a 793 nm single-mode diode laser and had a threshold pump power of 75 mW. The maximum output power of the single longitudinal mode laser was 18 mW and the slope efficiency with respect to the launched pump power was 11%. Moreover, the linewidth and relative intensity noise at different pump power have been measured and analyzed.
authors.forename: Shijie
authors.initials: S
authors.lastname: Fu
authors.forename: Wei
authors.initials: W
authors.lastname: Shi
authors.forename: Jichao
authors.initials: J
authors.lastname: Lin
authors.forename: Qiang
authors.initials: Q
authors.lastname: Fang
authors.forename: Quan
authors.initials: Q
authors.lastname: Sheng
authors.forename: Haiwei
authors.initials: H
authors.lastname: Zhang
authors.forename: Jinwei
authors.initials: J
authors.lastname: Wen
authors.forename: Jianquan
authors.initials: J
authors.lastname: Yao