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      Direct imaging of localized surface plasmon polaritons

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      Author
      Balcı, Sinan
      Karademir, Ertuğrul
      Kocabaş, Coşkun
      Aydınlı, Atilla
      Date
      2011-08
      Source Title
      Optics Letters
      Print ISSN
      0146-9592
      Publisher
      Optical Society of America
      Volume
      36
      Issue
      17
      Pages
      3401 - 3403
      Language
      English
      Type
      Article
      Item Usage Stats
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      108
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      Abstract
      In this Letter, we report on dark field imaging of localized surface plasmon polaritons (SPPs) in plasmonic waveguiding bands formed by plasmonic coupled cavities. We image the light scattered from SPPs in the plasmonic cavities excited by a tunable light source. Tuning the excitation wavelength, we measure the localization and dispersion of the plasmonic cavity mode. Dark field imaging has been achieved in the Kretschmann configuration using a supercontinuum white-light laser equipped with an acoustooptic tunable filter. Polarization dependent spectroscopic reflection and dark field imaging measurements are correlated and found to be in agreement with finite-difference time-domain calculations.
      Keywords
      Acousto-optic tunable filters
      Cavity mode
      Coupled cavity
      Dark field imaging
      Direct imaging
      Excitation wavelength
      Finite difference time domains
      Kretschmann configuration
      Localized surface plasmon polaritons
      Plasmonic
      Supercontinuum
      Wave-guiding
      White-light laser
      Electromagnetic wave polarization
      Finite difference time domain method
      Quantum theory
      Solids
      Time domain analysis
      Plasmons
      Permalink
      http://hdl.handle.net/11693/21781
      Published Version (Please cite this version)
      http://dx.doi.org/10.1364/OL.36.003401
      Collections
      • Advanced Research Laboratories (ARL) 34
      • Department of Physics 2299
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