Ultrasmall subwavelength nanorod plasmonic cavity
- Authors
- Kang, Ju-Hyung; No, You-Shin; Kwon, Soon-Hong; Park, Hong-Gyu
- Issue Date
- Jun-2011
- Publisher
- OPTICAL SOC AMER
- Citation
- OPTICS LETTERS, v.36, no.11, pp 2011 - 2013
- Pages
- 3
- Journal Title
- OPTICS LETTERS
- Volume
- 36
- Number
- 11
- Start Page
- 2011
- End Page
- 2013
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/21471
- DOI
- 10.1364/OL.36.002011
- ISSN
- 0146-9592
1539-4794
- Abstract
- 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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Collections - College of Natural Sciences > Department of Physics > 1. Journal Articles
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