Hybrid photonic-plasmonic crystal nanocavities

Xiaodong Yang; Atsushi Ishikawa; Xiaobo Yin; Xiang Zhang

doi:10.1021/nn1033482

Hybrid photonic-plasmonic crystal nanocavities

Xiaodong Yang, Atsushi Ishikawa, Xiaobo Yin, Xiang Zhang

Graduate School of Natural Science and Technology

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

87 Citations (Scopus)

Abstract

We propose a hybrid optical nanocavity consisting of photonic crystals coupled to a metal surface with a nanoscale air gap between. The hybridization of photonic crystal modes and surface plasmons across the gap forms hybrid cavity modes, which are highly confined in the low-loss air gap region. Deep subwavelength mode volume and high quality factor are demonstrated at telecommunication wavelength, resulting in an extremely large Q/V_m ratio of 60 000 λ^-3. This new type of high-Q/V_m broad-band hybrid nanocavity opens up opportunities for various applications in enhanced light-matter interactions.

Original language	English
Pages (from-to)	2831-2838
Number of pages	8
Journal	ACS Nano
Volume	5
Issue number	4
DOIs	https://doi.org/10.1021/nn1033482
Publication status	Published - Apr 26 2011

Keywords

hybrid plasmonic mode
optical nanocavity
photonic crystal
surface plasmon polariton

ASJC Scopus subject areas

Materials Science(all)
Engineering(all)
Physics and Astronomy(all)

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10.1021/nn1033482

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N2 - We propose a hybrid optical nanocavity consisting of photonic crystals coupled to a metal surface with a nanoscale air gap between. The hybridization of photonic crystal modes and surface plasmons across the gap forms hybrid cavity modes, which are highly confined in the low-loss air gap region. Deep subwavelength mode volume and high quality factor are demonstrated at telecommunication wavelength, resulting in an extremely large Q/Vm ratio of 60 000 λ-3. This new type of high-Q/Vm broad-band hybrid nanocavity opens up opportunities for various applications in enhanced light-matter interactions.

AB - We propose a hybrid optical nanocavity consisting of photonic crystals coupled to a metal surface with a nanoscale air gap between. The hybridization of photonic crystal modes and surface plasmons across the gap forms hybrid cavity modes, which are highly confined in the low-loss air gap region. Deep subwavelength mode volume and high quality factor are demonstrated at telecommunication wavelength, resulting in an extremely large Q/Vm ratio of 60 000 λ-3. This new type of high-Q/Vm broad-band hybrid nanocavity opens up opportunities for various applications in enhanced light-matter interactions.

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KW - optical nanocavity

KW - photonic crystal

KW - surface plasmon polariton

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Hybrid photonic-plasmonic crystal nanocavities

Abstract

Keywords

ASJC Scopus subject areas

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