title: Watt-level ultrahigh-optical signal-to-noise ratio single-longitudinal-mode tunable Brillouin fiber laser.
abstract: A watt-level ultrahigh optical signal-to-noise ratio single-longitudinal-mode (SLM) tunable Brillouin fiber laser (BFL) has been demonstrated. By optimizing the length of the single mode fiber (SMF) cavity at 11 m and its output ratio at 60%, 1.04 W output power, as well as stable SLM operation is obtained at 2.24 W pump power. The single pass cavity BFL has the advantage that the Brillouin pump frequency does not need to match the cavity mode, thus the stability is greatly improved. As only SMF is used in the cavity, the operating wavelength can be tunable without restriction from the self-lasing cavity mode. Furthermore, it proves that core-pumped single-frequency fiber laser is able to generate watt-level power. The laser demonstrates excellent performance in terms of noise, linewidth, and stability.
authors.affiliation: Department of Physics, State Key Laboratory of Advanced Optical Communication Systems and Networks, Shanghai Jiao Tong University, Shanghai 200240, China.
authors.forename: Gaomeng
authors.initials: G
authors.lastname: Wang
authors.forename: Li
authors.initials: L
authors.lastname: Zhan
authors.forename: Jinmei
authors.initials: J
authors.lastname: Liu
authors.forename: Tao
authors.initials: T
authors.lastname: Zhang
authors.forename: Jun
authors.initials: J
authors.lastname: Li
authors.forename: Liang
authors.initials: L
authors.lastname: Zhang
authors.forename: Junsong
authors.initials: J
authors.lastname: Peng
authors.forename: Lilin
authors.initials: L
authors.lastname: Yi