Full three-dimensional subwavelength high-Q surface-plasmon-polariton cavity

Min Kyo Seo; Soon Hong Kwon; Ho Seok Ee; Hong Gyu Park

doi:10.1021/nl902274m

Full three-dimensional subwavelength high-Q surface-plasmon-polariton cavity

Min Kyo Seo, Soon Hong Kwon, Ho Seok Ee, Hong Gyu Park

Department of Physics

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

62 Citations (Scopus)

Abstract

We propose a full three-dimensional subwavelength surface-plasmon-polariton cavity based on a metal-coated dielectric nanowire with an axial heterostructure. Surface plasmon-polaritons are strongly confined at the nanowire-metal interface sandwiched by an effective plasmonic mirror that consists of lower-index nanowire core and metal shell. Numerical simulations show for a cavity <50 × 50 x 40 nm³ (mode volume, V ∼ 10 ⁵ μm³) that a quality factor, Q, >36000 is achieved at 20 K. This ultrasmall plasmonic cavity can be used as a plasmonic emitter or laser device coupled to a plasmonic waveguide with a high coupling efficiency in deep-subwavelength photonic systems.

Original language	English
Pages (from-to)	4078-4082
Number of pages	5
Journal	Nano Letters
Volume	9
Issue number	12
DOIs	https://doi.org/10.1021/nl902274m
Publication status	Published - 2009 Dec 9

ASJC Scopus subject areas

Bioengineering
Chemistry(all)
Materials Science(all)
Condensed Matter Physics
Mechanical Engineering

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abstract = "We propose a full three-dimensional subwavelength surface-plasmon-polariton cavity based on a metal-coated dielectric nanowire with an axial heterostructure. Surface plasmon-polaritons are strongly confined at the nanowire-metal interface sandwiched by an effective plasmonic mirror that consists of lower-index nanowire core and metal shell. Numerical simulations show for a cavity <50 × 50 x 40 nm3 (mode volume, V ∼ 10 5 μm3) that a quality factor, Q, >36000 is achieved at 20 K. This ultrasmall plasmonic cavity can be used as a plasmonic emitter or laser device coupled to a plasmonic waveguide with a high coupling efficiency in deep-subwavelength photonic systems.",

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AU - Seo, Min Kyo

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AB - We propose a full three-dimensional subwavelength surface-plasmon-polariton cavity based on a metal-coated dielectric nanowire with an axial heterostructure. Surface plasmon-polaritons are strongly confined at the nanowire-metal interface sandwiched by an effective plasmonic mirror that consists of lower-index nanowire core and metal shell. Numerical simulations show for a cavity <50 × 50 x 40 nm3 (mode volume, V ∼ 10 5 μm3) that a quality factor, Q, >36000 is achieved at 20 K. This ultrasmall plasmonic cavity can be used as a plasmonic emitter or laser device coupled to a plasmonic waveguide with a high coupling efficiency in deep-subwavelength photonic systems.

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Full three-dimensional subwavelength high-Q surface-plasmon-polariton cavity

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