Zhao Tian-Xu, Liu Guang-Xin, Dai Li-Long, Zhao Bang, Cui Hu, Mou Cheng-Bo, Luo Zhi-Chao, Xu Wen-Cheng, Luo Ai-Ping
Opt Lett. 2022 Aug 1;47(15):3848-3851. doi: 10.1364/OL.465533.
We report a narrow bandwidth spatiotemporal mode-locked (STML) ytterbium-doped fiber laser, based on a homemade carbon nanotube/polyvinyl alcohol composite film and the multimode interference filtering effect. The wavelength-tunable narrow bandwidth STML operations combined with different pulse states are achieved, including single pulse, multiple pulses, and harmonics. The 3-dB bandwidth at the single-pulse state is 103 pm, while at the harmonic state, it is as narrow as 26 pm. To give an insight into the generation of the narrow bandwidth STML pulses, numerical simulations are performed. Such a laser has a wide range of potential applications in fields of optical communication and optical measurement, as well as provides a favorable platform for studying the evolution dynamics of multimode solitons.
我们报道了一种基于自制碳纳米管/聚乙烯醇复合薄膜和多模干涉滤波效应的窄带宽时空锁模（STML）掺镱光纤激光器。实现了结合不同脉冲状态的波长可调窄带宽STML运转，包括单脉冲、多脉冲和谐波。单脉冲状态下的3分贝带宽为103皮米，而在谐波状态下，其窄至26皮米。为深入了解窄带宽STML脉冲的产生，进行了数值模拟。这种激光器在光通信和光测量领域有广泛的潜在应用，同时为研究多模孤子的演化动力学提供了一个良好的平台。
