期刊
NANO LETTERS
卷 13, 期 3, 页码 1251-1256出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl3047893
关键词
Low-threshold; nanowire laser; composition-symmetric; nanophotonics
类别
资金
- National Basic Research Program of China [2012CB932703]
- NSF of China [90923014]
- Research Fund for the Doctoral Program of Higher Education [20110161110034]
- Aid program for Science and Technology Innovative Research Team in Higher Educational Instituions of Hunan Province
- Ministry of Education
- Hunan Provincial Innovation Foundation For Postgraduate [CX2012B157]
Low-threshold nanoscale lasers are attractive for their promising applications in highly integrated photonic devices and systems. Here we report the controllable growth of composition-symmetric CdSxSe1-x nanowires by using a multistep thermal evaporation route with moving sources. Microstructure analyses reveal the obtained wires are high-quality single crystals with the composition gradually changed from the center toward their both ends. Under laser illumination, these wires exhibit symmetrical color distribution along the length direction, with red at the center and green at the both ends. Optically pumped lasing is realized at room temperature using these composition-symmetric nanowires, with the threshold several times lower than that of composition-homogeneous wires. This new nanowire structure will have potential applications as low-threshold nanoscale lasers in integrated nanophotonics.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据