期刊
ADVANCED MATERIALS
卷 25, 期 6, 页码 833-837出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201203692
关键词
nanowires; tunable laser; semiconductor; absorption-emission-absorption
类别
资金
- National Natural Science Foundation of China [61177062]
- National Basic Research Program (973) of China [2013CB328703]
Wavelength tunability of lasers is one of the most important parameters for achieving practical applications such as optical communication, environmental monitoring, and spectroscopy analysis. A wide-wavelength tunable laser is demonstrated on a single non-doped CdSe nanowire (NW) without changing pumping intensity and position, but by simply gradually cutting the NW shorter instead. The corresponding mechanism for the large wavelength shifts is determined as the absorption-emission-absorption (AEA) process in polar CdSe NWs.
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