期刊
NATURE COMMUNICATIONS
卷 5, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/ncomms6580
关键词
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资金
- KAKENHI [24340066, 24654084, 26610080, 26870167]
- Asahi Glass Foundation
- Canon Foundation
- KDDI Foundation
- Project for Developing Innovation Systems
- Photon Frontier Network Program of MEXT, Japan
- MERIT
- JSPS Research Fellowship
- SCOPE
- Grants-in-Aid for Scientific Research [26610080, 24654084, 26870167] Funding Source: KAKEN
The unique emission properties of single-walled carbon nanotubes are attractive for achieving increased functionality in integrated photonics. In addition to being room-temperature telecom-band emitters that can be directly grown on silicon, they are ideal for coupling to nanoscale photonic structures. Here we report on high-efficiency coupling of individual air-suspended carbon nanotubes to silicon photonic crystal nanobeam cavities. Photoluminescence images of dielectric-and air-mode cavities reflect their distinctly different mode profiles and show that fields in the air are important for coupling. We find that the air-mode cavities couple more efficiently, and estimated spontaneous emission coupling factors reach a value as high as 0.85. Our results demonstrate advantages of ultralow mode-volumes in air-mode cavities for coupling to low-dimensional nanoscale emitters.
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