Waveguide-modulated surface plasmon-coupled emission of Nile blue in poly(vinyl alcohol) thin films

Ignacy Gryczynski, Joanna Malicka, Kazimierz Nowaczyk, Zygmunt Gryczynski, Joseph R. Lakowicz

Research output: Contribution to journalArticle

33 Scopus citations

Abstract

Surface plasmon-coupled emission (SPCE) phenomenon is the coupling of excited fluorophores near a silver film with surface plasmons, resulting in directional emission into the underlying glass substrates. We report a complex coupling of Nile Blue fluorophore with 50 nm silver mirror, resulting in emission at several angles in the glass substrate, with either s or p polarization. This complex pattern of directional and polarized emission appears to be due to optical waveguide effects occurring when the sample thickness becomes comparable to the emission wavelength. We expect waveguide-modulated SPCE to have applications to biophysics and sensing.

Original languageEnglish
Pages (from-to)15-20
Number of pages6
JournalThin Solid Films
Volume510
Issue number1-2
DOIs
StatePublished - 3 Jul 2006

Keywords

  • Nile Blue
  • Silver film
  • Surface plasmon-coupled emission
  • Waveguide

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