期刊
OPTICS LETTERS
卷 36, 期 11, 页码 2011-2013出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.36.002011
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资金
- Creative Research Initiatives of the Ministry of Education, Science, and Technology (MEST)/Korea Science and Engineering Foundation (KOSEF) [2011-0000419]
- TJ Park Doctoral Fellowship
- National Research Foundation of Korea [2009-0081565] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
We propose an ultrasmall plasmonic cavity consisting of a high-index/low-index dielectric nanorod covered with silver. Full three-dimensional subwavelength confinement of the surface-plasmon polaritons was achieved at the high-index dielectric-silver interface without propagating to the low-index dielectric-silver interface. The numerical simulations showed that the plasmonic mode excited in this cavity has a deep subwavelength mode volume of 0.0038(lambda/2n)(3) and a quality factor of 1500 at 40K, and consequently a large Purcell factor of similar to 2 x 10(5). Therefore, this plasmonic cavity is expected to be useful for the demonstration of high-efficiency single photon sources or low-threshold lasers in an ultracompact nanophotonic circuit. (C) 2011 Optical Society of America
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