Dresden 2017 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 28: Plasmonics and Nanooptics IV: Light-Matter Interaction
O 28.9: Vortrag
Dienstag, 21. März 2017, 12:30–12:45, TRE Ma
Linear ultra-broadband spectral interferometry for probing coherent surface plasmon polariton propagation in the time domain — Jue-Min Yi1, •Vladimir Smirnov1, Dongchao Hou1, Heiko Kollmann1, Zsuzsanna Pápa2, Péter Dombi2, Sven Stephan1, Daniel Espeloer1, Christoph Lienau1, and Martin Silies1 — 1AG Ultrafast Nano-Optics, Carl von Ossietzky Universität Oldenburg, Germany — 2Wigner Research Centre for Physics, 1121 Budapest, Hungary
Surface Plasmon Polaritons (SPPs) are evanescent coherent wave packets that can both confine the energy of light to metallic nanostructures and transport energy over mesoscopic distances [1]. They can then be used to generate and process information coded as optical signal to realize nanometer-scale all-optical circuitry. The propagation properties of these SPPs are defined by the geometry and composition of nanostructures. Here, we introduce a new ultra-broadband far-field spectral interferometry method to completely characterize coherent SPP propagation in metallic nanostructures, which allows the reconstruction of the plasmonic field in time domain [2]. Group velocity and dispersion of SPPs are determined with high precision in a broad frequency range in the visible and near-infrared regions, and the propagating SPP field at large distance is thus displayed with high time resolution. Our results shed new light on characterizing the interplay between nanostructure geometry and coherent SPP propagation.
[1] M.L.M. Balistreri, et al., Science 294, p.1080 (2001)
[2] J.Yi, et al., submitted to ACS Photonics (2016)