Dresden 2017 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 39: Plasmonics and Nanooptics IV: Light-Matter Interaction

HL 39.9: 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 domainJue-Min Yi1, •Vladimir Smirnov1, Dongchao Hou1, Heiko Kollmann1, Zsuzsanna Pápa2, Péter Dombi2, Sven Stephan1, Daniel Espeloer1, Christoph Lienau1, and Martin Silies11AG 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)

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