Cai Xiaofeng, Xie Liqin, Gu Ping, Zhang Zuxing
Appl Opt. 2020 Dec 20;59(36):11337-11341. doi: 10.1364/AO.408961.
We report on two-dimensional (2D) hexagonal boron nitride (hBN) as saturable absorber (SA) material in a passively -switched erbium-doped fiber laser (EDFL) operating at 1.5 µm. The 2D hBN film as an SA is fabricated and transferred onto the optical fiber tip by natural deposition technology. In the -switched operation, we obtain stable -switched laser operation with a maximum average 10% output power of 2.25 mW, corresponding to a repetition frequency of 55.5 kHz, shortest pulse width of 6.77 µs, and single pulse energy of 40.49 nJ. The achieved PQS at 1.5 µm EDFL with 2D hBN as an SA may have potential applications in many novel 2D materials and all-fiber lasers.
我们报道了二维（2D）六方氮化硼（hBN）作为饱和吸收体（SA）材料应用于工作在1.5μm的被动调Q掺铒光纤激光器（EDFL）中。通过自然沉积技术制备了作为饱和吸收体的二维hBN薄膜，并将其转移到光纤尖端。在调Q运行中，我们获得了稳定的调Q激光运行，最大平均输出功率为2.25 mW，对应重复频率为55.5 kHz，最短脉冲宽度为6.77 µs，单脉冲能量为40.49 nJ。以二维hBN作为饱和吸收体在1.5μm掺铒光纤激光器中实现的性能指标可能在许多新型二维材料和全光纤激光器中具有潜在应用。
