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Nano Lett. 2011 Mar 9;11(3):1122-6. doi: 10.1021/nl1040308. Epub 2011 Feb 15.

Single-nanowire single-mode laser.

Author information

1
State Key Laboratory of Modern Optical Instrumentation, Department of Optical Engineering, Zhejiang University , Hangzhou 310027, China.

Abstract

We demonstrate single-mode laser emission in single nanowires. By folding a 200 nm diameter CdSe nanowire to form loop mirrors, single-mode laser emission around 738 nm wavelength is obtained with line width of 0.12 nm and low threshold. The mode selection is realized by the vernier effect of coupled cavities in the folded nanowire. In addition, the loop structure makes it possible to tune the nanowire cavity, opening an opportunity to realize a tunable single-mode nanowire laser.

PMID:
21322600
DOI:
10.1021/nl1040308

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