Direct Visualization of Counter-Propagating Surface Plasmons in Real Space-Time.

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ID: 42380
2019
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Ranked #28 of 38 articles by views in The journal of physical chemistry letters

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Abstract
We deploy two-dimensional nano-hole arrays as resonant surface plasmon polariton (SPP) couplers that enable counter-propagation and excitation field interference-free imaging of SPP wave-packets. We monitor the spatiotemporal evolution of the resulting SPPs using two-color photoemission electron microscopy (PEEM). The measurements track the electric field envelope of the SPP in real space and time and enable direct characterization of their spatiotemporal properties in a regime where the SPP wave packet is the principle observable. We provide an analysis of the observables for both the co- and counter-propagating directions via SPP trajectories that are recorded in tandem. Our results highlight the advantages of isolating SPPs through counter-propagation, where excitation field-SPP interactions are suppressed.
Reference Key
crampton2019directthe Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Crampton, Kevin Thomas;Joly, Alan G;El-Khoury, Patrick Z;
Journal The journal of physical chemistry letters
Year 2019
DOI
10.1021/acs.jpclett.9b02151
URL
Keywords Keywords not found

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