Hybrid photonic-plasmonic crystal nanocavities

Xiaodong Yang, Atsushi Ishikawa, Xiaobo Yin, Xiang Zhang

Research output: Contribution to journalArticlepeer-review

102 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)2831-2838
Number of pages8
JournalACS Nano
Issue number4
Publication statusPublished - Apr 26 2011
Externally publishedYes


  • hybrid plasmonic mode
  • optical nanocavity
  • photonic crystal
  • surface plasmon polariton

ASJC Scopus subject areas

  • General Materials Science
  • General Engineering
  • General Physics and Astronomy


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