Open AccessLD-cladding-pumped 50 pm linewidth Tm^3+-doped silica fiber laser
Author(s) -
Zhang Yunjun,
Baoquan Yao,
Youlun Ju,
Hui Zhou,
Yuezhu Wang
Publication year - 2008
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.007715
Subject(s) - materials science , optics , laser linewidth , fiber laser , fiber bragg grating , laser , laser diode , optoelectronics , distributed feedback laser , laser power scaling , slope efficiency , cladding (metalworking) , diode , wavelength , physics , metallurgy
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.