Fang, M;
Huang, Z;
Wu, X;
Sha, WEI;
(2018)
Terahertz Generation from Plasmonic Metasurfaces.
In:
2018 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference (CSQRWC), 21-24 July 2018, Xuzhou, China.
IEEE
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Abstract
We numerically report a novel THz generation method based on plasmonic metasurface consist of single layer split-ring resonators array. The terahertz generation originates from nonlinear optical rectification in meta-atoms is broadband and free from phase match conditions. The strong linear response and inherent nonlinear behaviors in plasmonic metasurface can be described by a time-domain hydrodynamic model, in which both surface and bulk contributions of nonlinearity are considered. The coupled Maxwell-hydrodynamic system capturing full-wave physics and free electron dynamics is solved with a parallel finite-difference time-domain (FDTD) method. The proposed method is fundamentally important to design nonlinear plasmonic nanodevices, especially for efficient and broadband THz emitters.
| Type: | Proceedings paper |
|---|---|
| Title: | Terahertz Generation from Plasmonic Metasurfaces |
| Event: | Cross Strait Quad-Regional Radio Science and Wireless Technology Conference (CSQRWC) |
| ISBN-13: | 9781538664230 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/CSQRWC.2018.8455297 |
| Publisher version: | https://doi.org/10.1109/CSQRWC.2018.8455297 |
| 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: | Hydrodynamic model , nonlinear plasmonic nanodevice , finite-difference time-domain (FDTD) , terahertz emission , metasurface |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10065538 |
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