Liu, J;
Papakonstantinou, I;
Hu, H;
Shao, X;
(2019)
Dynamically configurable, successively switchable multispectral plasmon-induced transparency.
Optics Letters
, 44
(15)
pp. 3829-3832.
10.1364/OL.44.003829.
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Abstract
Plasmon-induced transparency (PIT) in nanostructures has been intensively investigated; however, there are no known metasurface nanostructures that exhibit all optically tunable properties, where the number of transparency windows can be tuned successively and switched to off-state. In this Letter, we theoretically investigate and demonstrate a dynamically tunable, multichannel PIT at optical frequencies. The in-plane destructive interference between bright and dark dipolar resonances in coupled plasmonic nanobar topologies is exploited to produce a tunable PIT with unique characteristics. In particular, we demonstrate a sequential polarization-selective multispectral operation whereby the number of PIT channels can be varied successively from 3 to 0. The results provide a promising route for an active manipulation of PIT and show potential applications for multifunctional dynamic nanophotonics devices.
| Type: | Article |
|---|---|
| Title: | Dynamically configurable, successively switchable multispectral plasmon-induced transparency |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1364/OL.44.003829 |
| Publisher version: | https://doi.org/10.1364/OL.44.003829 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Destructive interference, Electromagnetic scattering, Finite difference time domain, Polarization, Refractive index, Resonance |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10083426 |
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