980nm双包层光子晶体光纤激光器

980 nm double-clad photonic crystal fiber laser

采用内包层直径为200μm、纤芯直径40μm,长度45 cm的掺镱双包层光子晶体光纤作为增益介质,915 nm激光二极管(LD)泵浦源,实现了运转于准三能级系统的980 nm连续激光输出。双端输出时,总输出功率为463.3 mW,斜效率为17.8%;单端输出时,输出功率为543 mW,斜效率为11.6%。

A quasi-three-level Yb-doped double-clad photonic crystal fiber laser at 980 nm pumped by 915 nm LD laser is reported. The photonic crystal fiber used in the experiment has a core diameter of 40 μm, inner clad of 200 μm, an absorption coefficient of about 9 dB/m at 980 nm. The fiber length is 45 cm. The 980 nm photonic crystal fiber laser of the double-ended output mode emitted 463.3 mW with a slope efficiency of 17.8%. In the single-end output experiment, an output power of 543 mW with a slope efficiency of 11.6% has been achieved.