LD-cladding-pumped 50 pm linewidth Tm 3+ -doped silica fiber laser.
We report on a Tm(3+)-doped fiber laser source operating at 1936.4 nm with a very narrow linewidth (50 pm) laser output. Up to 2.4 W cw laser power was obtained from an 82 cm long Tm(3+)-doped multimode-core fiber cladding pumped by a 792 nm laser diode (LD). The fiber laser cavity included a high-reflective dichroic and a low-reflective FBG output coupler. The multimode fiber Bragg grating (FBG) transmission spectrum and output laser spectrum were measured. By adjusting the distance between the dichroic and the Tm(3+)-doped fiber end, the multipeak laser spectrum changed to a single-peak laser spectrum.
National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin 150001, China. hitzyj@126.com
Zhang
Z
Yunjun
Yao
Y
Baoquan
Ju
J
Youlun
Zhou
Z
Hui
Wang
W
Yuezhu
D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D054023:Lasers, Semiconductor; D008962:Models, Theoretical; D012031:Refractometry / Q000295:instrumentation*; D012822:Silicon Dioxide / Q000737:chemistry*
D012822:Silicon Dioxide