Yunjun Zhang, Baoquan Yao, Youlun Ju, Hui Zhou, Yuezhu Wang
National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin 150001, China.
Opt Express. 2008 May 26;16(11):7715-9. doi: 10.1364/oe.16.007715.
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.
我们报道了一种掺铥（Tm(3+)）光纤激光源，其工作波长为1936.4 nm，具有极窄线宽（50 pm）的激光输出。通过由792 nm激光二极管（LD）泵浦的82 cm长掺铥（Tm(3+)）多模纤芯光纤包层，获得了高达2.4 W的连续波激光功率。光纤激光腔包括一个高反射率二向色镜和一个低反射率光纤布拉格光栅（FBG）输出耦合器。测量了多模光纤布拉格光栅（FBG）传输光谱和输出激光光谱。通过调整二向色镜与掺铥（Tm(3+)）光纤末端之间的距离，多峰激光光谱转变为单峰激光光谱。
