材料科学
超短脉冲
光子学
纳米纤维
光电子学
复合数
量子点
复合材料
静电纺丝
飞秒
光学
激光器
聚合物
物理
作者
Yanhua Xu,Wenxi Wang,Yanqi Ge,Hanyu Guo,Xiaojian Zhang,Si Chen,Yonghong Deng,Zhouguang Lu,Han Zhang
标识
DOI:10.1002/adfm.201702437
摘要
The stabilization of black phosphorous quantum dots (BPQDs) for optical application under ambient conditions is highly challenging. Here, a facile approach is presented to substantially stabilize BPQDs by making a uniform BPQDs/polymethyl methacrylate (PMMA) composite nanofiber film via an electrospinning technique. As verified by femtosecond laser Z‐scan measurement, the BPQDs/PMMA composite nanofiber film that has been stored for three months exhibits almost the same nonlinear optical properties as the fresh BPQDs. Additionally, the BPQDs/PMMA composite nanofiber film demonstrates broadband nonlinear optical response ranging from the visible bandwidth (400 nm) to the mid‐IR bandwidth (at least 1930 nm). By employing the BPQDs/PMMA composite nanofiber film as an optical saturable absorber, an ultrashort pulse with the pulse duration of ≈1.07 ps centered at the wavelength of 1567.6 nm is generated in a mode‐locked fiber laser. These results suggest that the BPQDs/PMMA composite nanofiber film can combine the advantage of convenient integration and mitigation of the drawback of the easy oxidation of black phosphorous and pave the way for BP‐based practical optoelectronic devices.
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