Surface plasmons excited by the photoluminescence of organic nanofibers in hybrid plasmonic systems

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Abstract

Recent research on hybrid plasmonic systems has shown the existence of a loss channel for energy transfer between organic materials and plasmonic/metallic structured substrates. This work focuses on the exciton-plasmon coupling between para-Hexaphenylene (p-6P) organic nanofibers (ONFs) and surface plasmon polaritons (SPPs) in organic/dielectric/metal systems. We have transferred the organic p-6P nanofibers onto a thin silver film covered with a dielectric (silicon dioxide) spacer layer with varying thicknesses. Coupling is investigated by two-photon fluorescence-lifetime imaging microscopy (FLIM) and leakage radiation spectroscopy (LRS). Two-photon excitation allows us to excite the ONFs with near-infrared light and simultaneously avoids direct SPP excitation on the metal layer. We observe a strong dependence of fluorescence lifetime on the type of underlying substrate and on the morphology of the fibers. The experimental findings are complemented via finite-difference time-domain (FDTD) modeling. The presented results lead to a better understanding and control of hybrid-mode systems, which are crucial elements in future low-loss energy transfer devices. © (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Original languageEnglish
Title of host publicationNanophotonics VI
EditorsDavid L. Andrews, Jean-Michel Nunzi, Andreas Ostendorf
Number of pages7
PublisherSPIE - International Society for Optical Engineering
Publication date21. Apr 2016
Article number98843D
ISBN (Electronic)9781510601291
DOIs
Publication statusPublished - 21. Apr 2016
EventSPIE Photonics Europe 2016 - SQUARE Brussels Meeting Centre, Brussels, Belgium
Duration: 3. Apr 20167. Jun 2016
https://spie.org/conferences-and-exhibitions/photonics-europe

Conference

ConferenceSPIE Photonics Europe 2016
LocationSQUARE Brussels Meeting Centre
CountryBelgium
CityBrussels
Period03/04/201607/06/2016
Internet address
SeriesS P I E - International Society for Optical Engineering. Proceedings
Volume9884
ISSN0277-786X

Keywords

  • nanofibers
  • Surface plasmons polaritons
  • Fluorescence Lifetime

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