Bondareff, P;
Volpe, G;
Gigan, S;
Gresillon, S;
(2015)
Probing extended modes on disordered plasmonic networks by wavefront shaping.
ACS Photonics
10.1021/acsphotonics.5b00394.
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Abstract
We experimentally study the optical field distribution on disordered plasmonic networks by far-field wavefront shaping. We observe nonlocal fluctuations of the field intensity mediated by plasmonic modes up to a distance of 10 μm from the excitation area. In particular we quantify the spatial extent of these fluctuations as a function of the metal filling fraction in the plasmonic network, and we identify a clear increase around percolation due to the existence of extended plasmonic modes. This paves the way toward far-field coherent control of plasmonic modes on similar disordered plasmonic networks. We expect these results to be relevant for quantum networks, coherent control, and light–matter interactions in such disordered films where long-range interactions are critical.
| Type: | Article |
|---|---|
| Title: | Probing extended modes on disordered plasmonic networks by wavefront shaping |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1021/acsphotonics.5b00394 |
| Publisher version: | http://dx.doi.org/10.1021/acsphotonics.5b00394 |
| Language: | English |
| Additional information: | This document is the unedited Author’s version of a Submitted Work that was subsequently accepted for publication in ACS Photonics, copyright © American Chemical Society after peer review. To access the final edited and published work see http://dx.doi.org/10.1021/acsphotonics.5b00394. |
| Keywords: | plasmonic networks; surface plasmon; surface wave; wavefront shaping; mode extension; disorder; far-field control; leaky wave microscopy |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1473082 |
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