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Author Leißner, Till ♦ Kostiučenko, Oksana ♦ Rubahn, Horst-Günter ♦ Fiutowski, Jacek ♦ Brewer, Jonathan R.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ FLUORESCENCE ♦ GOLD ♦ HARMONIC GENERATION ♦ HYBRID SYSTEMS ♦ HYBRIDIZATION ♦ LIFETIME ♦ MICROSCOPY ♦ MOLECULES ♦ NANOFIBERS ♦ PHOTONS
Abstract In this letter we show that the optical response of organic nanofibers, grown from functionalized para-quaterphenylene molecules, can be controlled by forming organic-plasmonic hybrid systems. The interaction between nanofibers and supporting regular arrays of nanostructures leads to a strongly enhanced second harmonic response. At the same time, the fluorescence lifetime of the nanofibers is reduced from 0.32 ns for unstructured gold films to 0.22 ns for gold nanosquare arrays, demonstrating efficient organic–plasmonic interaction. To study the origin of these effects, we applied two-photon laser scanning microscopy and fluorescence lifetime imaging microscopy. These findings provide an effective approach for plasmon-enhanced second-harmonic generation at the nanoscale, which is attractive for nanophotonic circuitry.
ISSN 00036951
Educational Use Research
Learning Resource Type Article
Publisher Date 2015-12-21
Publisher Place United States
Journal Applied Physics Letters
Volume Number 107
Issue Number 25


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