Extremely low-loss slow-light modes in plasmonic dielectric hybrid systems

Atsushi Ishikawa, Rupert F. Oulton, Thomas Zentgraf, Xiang Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

A new class of optical modes arising from the hybridization between one localized plasmon and two orthogonal waveguide modes is described. Of particular interest is our observation that these hybrid modes simultaneously exhibit extremely low-loss and highly dispersive characteristics, which translate into slow light propagation. We propose that this is a new type of classical analogs of the electromagnetically induced transparency (EIT) in an atomic system. Based on a fine balance of geometric and material dispersion in the system, destructive interference of the waveguide modes cancels out the metal loss, resulting in a narrow transparent window within a broad absorption band. In accordance with the developed phenomenological model, we show that the dispersion characteristics of the hybrid modes can be entirely controlled by tuning the coupling strengths between the plasmon and waveguide modes while the mode losses remain the same.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume7757
DOIs
Publication statusPublished - 2010
Externally publishedYes
EventPlasmonics: Metallic Nanostructures and Their Optical Properties VIII - San Diego, CA, United States
Duration: Aug 1 2010Aug 5 2010

Other

OtherPlasmonics: Metallic Nanostructures and Their Optical Properties VIII
CountryUnited States
CitySan Diego, CA
Period8/1/108/5/10

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Keywords

  • Coupling
  • Electromagnetic-induced transparency (EIT)
  • Plasmonic hybridization
  • Slow light
  • Waveguide-plasmon polaritons

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Ishikawa, A., Oulton, R. F., Zentgraf, T., & Zhang, X. (2010). Extremely low-loss slow-light modes in plasmonic dielectric hybrid systems. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 7757). [77571B] https://doi.org/10.1117/12.860190