| Issue |
J. Eur. Opt. Soc.-Rapid Publ.
Volume 15, Number 1, 2019
|
|
|---|---|---|
| Article Number | 4 | |
| Number of page(s) | 8 | |
| DOI | https://doi.org/10.1186/s41476-019-0100-9 | |
| Published online | 04 April 2019 | |
Research
Scattering of partially coherent surface plasmon polariton fields by metallic nanostripe
1
Institute of Photonics, University of Eastern Finland, P. O. Box 111 FI-80101, Joensuu, Finland
2
Department of Electrical and Computer Engineering, Dalhousie University, Halifax, B3J 2X4, Nova Scotia, Canada
3
Department of Physics and Atmospheric Science, Dalhousie University, Halifax, B3H 2R2, Nova Scotia, Canada
Received:
6
November
2018
Accepted:
19
March
2019
Background: Surface plasmon polaritons (SPPs) are electromagnetic waves that propagate at a metal-dielectric interface. Until recently, monochromatic, fully coherent SPPs have mainly been considered.
Methods: We investigate by numerical simulations the generation and properties of polychromatic, partially coherent SPPs and their scattering from a nanostripe. We use both in-house and commercial codes.
Results: A standing SPP field is created in Kretschmann’s setup between the excitation point and the nanostripe. From the scattered far-field spectrum, all spatiotemporal coherence properties of the SPP field pattern can be deduced. Illustrative examples of such coherence variations are analyzed.
Conclusions: Plasmonic nanostructures produce strong confined SPP fields of widely controllable coherence.
Key words: Surface plasmon polaritons / Partial coherence / Nanoscattering
© The Author(s) 2019
Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
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