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"Radiation Channels Close to a Plasmonic Nanowire Visualized by Back Focal Plane Imaging" Nicolai Hartmann, Dawid Piatkowski, Richard Ciesielski, Sebastian Mackowski, Achim HartschuhACS Nano 7, no. 11, pp. 10257-10262 (2013) Abstract: We investigated the angular radiation patterns, a key characteristic of an emitting system, from individual silver nanowires decorated with rare earth ion-doped nanocrystals. Back focal plane radiation patterns of the nanocrystal photoluminescence after local two-photon excitation can be described by two emission channels: excitation of propagating surface plasmons in the nanowire followed by leakage radiation and direct dipolar emission observed also in the absence of the nanowire. Theoretical modeling reproduces the observed radiation patterns which strongly depend on the position of excitation along the nanowire. Our analysis allows us to estimate the branching ratio into both emission channels and to determine the diameter-dependent surface plasmon quasi-momentum, important parameters of emitter-plasmon structures. This publication has not been written at BMO BMO authors (in alphabetic order): Richard Ciesielski  WWW-Version DOI-Version |
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Letzte Änderung: 2016-09-14 13:34
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