Ultrasmall subwavelength nanorod plasmonic cavity

Ju Hyung Kang; You Shin No; Soon Hong Kwon; Hong Gyu Park

doi:10.1364/OL.36.002011

Ultrasmall subwavelength nanorod plasmonic cavity

Ju Hyung Kang, You Shin No, Soon Hong Kwon, Hong Gyu Park

Department of Physics

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

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(λ/2n)³ and a quality factor of 1500 at 40K, and consequently a large Purcell factor of ̃2 × 105. 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.

Original language	English
Pages (from-to)	2011-2013
Number of pages	3
Journal	Optics Letters
Volume	36
Issue number	11
DOIs	https://doi.org/10.1364/OL.36.002011
Publication status	Published - 2011 Jun 1

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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title = "Ultrasmall subwavelength nanorod plasmonic cavity",

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(λ/2n)3 and a quality factor of 1500 at 40K, and consequently a large Purcell factor of{\~ }2 × 105. 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.",

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AU - Kang, Ju Hyung

AU - No, You Shin

AU - Kwon, Soon Hong

AU - Park, Hong Gyu

PY - 2011/6/1

Y1 - 2011/6/1

N2 - 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(λ/2n)3 and a quality factor of 1500 at 40K, and consequently a large Purcell factor of ̃2 × 105. 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.

AB - 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(λ/2n)3 and a quality factor of 1500 at 40K, and consequently a large Purcell factor of ̃2 × 105. 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.

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Ultrasmall subwavelength nanorod plasmonic cavity

Abstract

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