Dresden 2017 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 54: Plasmonics and Nanooptics VI: Light-Matter Interactions and Characterisation
HL 54.5: Vortrag
Mittwoch, 22. März 2017, 11:30–11:45, TRE Ma
Characterization of thin-load polymethyl-methacrylate plasmonic waveguides using PEEM — •Malte Großmann1, Martin Thomaschewski1, Alwin Klick1, Elzbieta Sobolewska2, Arkadiusz Jaroslaw Goszczak2, Till Leißner2, Jacek Fiutowski2, Horst-Günter Rubahn2, and Michael Bauer1 — 1Institute of Experimental and Applied Physics, University of Kiel, Leibnizstraße 19, D-24118 Kiel, Germany — 2Mads-Clausen-Institute, NanoSYD, University of Southern Denmark, Alsion 2, DK-6400 Sønderborg, Denmark
Surface plasmon-polaritons (SPPs) are promising candidates for future signal transport applications due to their capability of bypassing the diffraction limit of light. However, for applications such as on-chip communications SPPs have to be confined laterally. This can be achieved using plasmonic waveguides. Here we present work on dielectric-loaded SPP waveguides (DLSPPW) using a thin load (30 to 50 nm) of polymethyl-methacrylate (PMMA).
PMMA DLSPPW of variable width are fabricated on gold substrates using electron-beam lithography. We investigate the waveguides using photoemission electron microscopy supported by a wavelength-tunable near-infrared laser. The dispersive characteristics of the waveguides are compared to finite-element-method calculations. We are able to determine waveguide mode effective index with quantitative agreement and mode confinement with qualitative agreement to expectations set by the finite-element-method calculations for both singlemode and multimode waveguiding.