PROCEEDINGS ARTICLE | March 11, 2016
Proc. SPIE. 9728, Fiber Lasers XIII: Technology, Systems, and Applications
KEYWORDS: Optical fibers, Phase modulation, Fiber Bragg gratings, LIDAR, Glasses, Spectroscopy, Laser applications, Laser development, Reflectivity, Fiber lasers, Semiconductor lasers, Laser resonators, Nonlinear frequency conversion, Silicates, Specialty optical fibers, Absorption
Single-frequency fiber laser operating at 1950 nm has been demonstrated in an all-fiber distributed Bragg reflection (DBR) laser cavity by using a 1.9-cm commercial available Thulium-doped silica fiber, for the first time. 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 (RIN) at different pump power has been measured and analyzed. The successful demonstration with the Thulium-doped silica fiber used here is considered to further promote the commercialization of single frequency fiber laser at 2 μm.
