Journal
NANO LETTERS
Volume 11, Issue 3, Pages 1122-1126Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl1040308
Keywords
Nanowire; laser; single mode; Vernier effect; coupled cavity; loop mirror
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Funding
- National Basic Research Program of China [2007CB307003, 2007CB613402]
- National Natural Science Foundation of China [10974178, 61036012, 10774007]
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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.
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