28 August 2015 Local field enhanced second-harmonic response of organic nanofibers deposited on encapsulated plasmonic substrates
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Abstract
In this work, enhancement of the second harmonic response of organic nanofibers deposited on encapsulated and robust plasmonic active substrate is experimentally demonstrated. Organic nanofibers grown from functionalized paraquaterphenylene (CNHP4) molecules have been transferred on lithographically defined regular arrays of gold nanostructures, which subsequently have been coated with thin films of diamond-like carbon with 25, 55 and 100 nm thickness. Femtosecond laser scanning microscopy enables us to identify enhancement of the second harmonic response of the fibers. This is facilitated by a preservation of the field enhancement effects, which appear on the nanostructures and remain significant on top of the coating layer.
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Oksana Kostiučenko, Oksana Kostiučenko, Till Leißner, Till Leißner, Jonathan R. Brewer, Jonathan R. Brewer, Tomas Tamulevičius, Tomas Tamulevičius, Sigitas Tamulevičius, Sigitas Tamulevičius, Jacek Fiutowski, Jacek Fiutowski, Horst-Günter Rubahn, Horst-Günter Rubahn, } "Local field enhanced second-harmonic response of organic nanofibers deposited on encapsulated plasmonic substrates", Proc. SPIE 9547, Plasmonics: Metallic Nanostructures and Their Optical Properties XIII, 954711 (28 August 2015); doi: 10.1117/12.2189478; https://doi.org/10.1117/12.2189478
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