Conference proceedings article
Surface plasmons excited by the photoluminescence of organic nanofibers in hybrid plasmonic systems
Publication Details
Authors: | Sobolewska, E.; Leißner, T.; Jozefowski, L.; Brewer, J.; Rubahn, H.; Adam, J.; Fiutowski, J. |
Editor: | Andrews, David L.; Nunzi, Jean-Michel; Ostendorf, Andreas |
Publisher: | SPIE |
Place: | Bellingham, Wash.,USA |
Publication year: | 2016 |
Journal: | Proceedings of SPIE |
Pages range : | 98843D |
Book title: | Nanophotonics VI : SPIE Photonics Europe, 3-7 April 2016 |
Title of series: | Proceedings // SPIE |
Number in series: | 9884 |
Volume number: | 9884 |
Number of pages: | 7 |
ISSN: | 0277-786X |
DOI-Link der Erstveröffentlichung: |
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.
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.
Keywords
exciton-plasmon coupling, fluorescence lifetime imaging microscopy, hybrid modes, leakage radiation spectroscopy, nanofibers as active sources, organic fibers and films, surface plasmon polaritons
