Opt Lett. 2018 Dec 15;43(24):6105-6108. doi: 10.1364/OL.43.006105.
Optical microfibers can show very strong normal dispersion (as high as 2700 ps/km) around 2 μm, a highly desired feature for dispersion management in ultrafast lasers. Here we report a dissipative soliton fiber laser at 2 μm enabled by an optical microfiber. The full width at half-maximum of the optical spectrum was about 50 nm, and its flatness could be attributed to the third-order dispersion compensation provided by the optical microfiber. The pulse duration was measured to be 195 fs after a dechirping single-mode fiber. Our results suggest a new route to dissipative soliton fiber lasers at 2 μm, with a wide and flat spectrum and thus a short dechirped pulse.
光学微光纤在 2μm 附近可呈现出很强的正常色散（高达 2700 ps/km），这是超快激光器色散管理所需的一个非常理想的特性。在此，我们报道了一种基于光学微光纤的 2μm 耗散孤子光纤激光器。光光谱的半峰全宽约为 50nm，其平坦度可归因于光学微光纤提供的三阶色散补偿。经过去啁啾单模光纤后，脉冲持续时间测量为 195fs。我们的结果表明，2μm 处的耗散孤子光纤激光器具有较宽且平坦的光谱，因此去啁啾脉冲较短，这为其开辟了一条新的研究途径。
