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Proceedings Paper

Surface plasmons excited by the photoluminescence of organic nanofibers in hybrid plasmonic systems
Author(s): Elżbieta K. Sobolewska; Till Leißner; Leszek Jozefowski; Jonathan Brewer; Horst-Günter Rubahn; Jost Adam; Jacek Fiutowski
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Paper 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.

Paper Details

Date Published: 21 April 2016
PDF: 7 pages
Proc. SPIE 9884, Nanophotonics VI, 98843D (21 April 2016); doi: 10.1117/12.2227813
Show Author Affiliations
Elżbieta K. Sobolewska, Univ. of Southern Denmark (Denmark)
Till Leißner, Univ. of Southern Denmark (Denmark)
Leszek Jozefowski, Jagiellonian Univ. (Poland)
Jonathan Brewer, Univ. of Southern Denmark (Denmark)
Horst-Günter Rubahn, Univ. of Southern Denmark (Denmark)
Jost Adam, Univ. of Southern Denmark (Denmark)
Jacek Fiutowski, Univ. of Southern Denmark (Denmark)

Published in SPIE Proceedings Vol. 9884:
Nanophotonics VI
David L. Andrews; Jean-Michel Nunzi; Andreas Ostendorf, Editor(s)

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