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      Ultra hybrid plasmonics: Strong coupling of plexcitons with plasmon polaritons

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      Author
      Balci, S.
      Kocabas, C.
      Date
      2015
      Source Title
      Optics Letters
      Print ISSN
      0146-9592
      Publisher
      OSA - The Optical Society
      Volume
      40
      Issue
      14
      Pages
      3424 - 3427
      Language
      English
      Type
      Article
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      Abstract
      We report a ternary-coupled plasmonic system consisting of excitons of J-aggregated dye, localized surface plasmon polaritons of Ag nanoparticles, and propagating surface plasmon polaritons of continuous Ag film. J-aggregate dyes are uniformly self-assembled on colloidally synthesized Ag nanoprisms forming plexcitonic nanoparticles, which are placed at a distance nanometers away from the Ag thin film. The reflection measurements, corroborated by theoretical predictions, reveal that the strong coupling of plasmon polaritons and plexcitons results in a newly formed plasmon-exciton-plasmon hybridized state that we call here, reportedly for the first time, a plexcimon state. The hybrid plasmonic system shows dispersion characteristics similar to a coupled resonator optical waveguide. The group velocity of the plexcimon state approaches zero at the band edges. The ultrahybrid plasmonic system presented here is promising for a variety of light-matter interaction studies, including polariton lasers, plasmonic devices, plasmonic waveguiding, and spectroscopy.
      Keywords
      Aggregates
      Electromagnetic wave polarization
      Excitons
      Nanoparticles
      Phonons
      Photons
      Quantum theory
      Silver
      Surface plasmon resonance
      Synthesis (chemical)
      Waveguides
      Coupled-resonator optical waveguides
      Dispersion characteristics
      Light-matter interactions
      Localized surface plasmon polaritons
      Plasmon-polaritons
      Plasmonic devices
      Propagating surface plasmons
      Reflection measurements
      Plasmons
      Permalink
      http://hdl.handle.net/11693/22802
      Published Version (Please cite this version)
      http://dx.doi.org/10.1364/OL.40.003424
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      • Department of Physics 2339
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