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Opt Express. 2008 May 26;16(11):7715-9.

LD-cladding-pumped 50 pm linewidth Tm 3+ -doped silica fiber laser.

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National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin 150001, China.


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.

[Indexed for MEDLINE]

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