Dark and bright modes manipulation for plasmon-triggered photonic devices

S. Panaro, A. Nazir, C. Liberale, H. Wang, F. De Angelis, R. Proietti Zaccaria, E. Di Fabrizio, A. Toma

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

In the last decade, several efforts have been spent in the study of near-field coupled systems, in order to induce hybridization of plasmonic modes. Within this context, particular attention has been recently paid on the possibility to couple conventional bright and dark modes. As a result of such phenomenon, a Fano resonance appears as a characteristic sharp dip in the scattering spectra. Here we show how, gradually coupling a single rod-like nanostructure to an aligned nanoantenna dimer, it is possible to induce the near-field activation of an anti-bonding dark mode. The high polarization sensitivity presented by the far-field response of T-shape trimer, combined with the sharp Fano resonance sustained by this plasmonic device, opens interesting perspectives towards a new era of photonic devices.

Original languageEnglish (US)
Title of host publicationPlasmonics
Subtitle of host publicationMetallic Nanostructures and Their Optical Properties XII
EditorsAllan D. Boardman
PublisherSPIE
ISBN (Electronic)9781628411904
DOIs
StatePublished - 2014
EventPlasmonics: Metallic Nanostructures and Their Optical Properties XII - San Diego, United States
Duration: Aug 17 2014Aug 21 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9163
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferencePlasmonics: Metallic Nanostructures and Their Optical Properties XII
Country/TerritoryUnited States
CitySan Diego
Period08/17/1408/21/14

Keywords

  • Fano resonance
  • localized surface plasmon
  • plasmonics

ASJC Scopus subject areas

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

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