Fang, M;
Niu, K;
Huang, Z;
Sha, WEI;
Wu, X;
Koschny, T;
Soukoulis, CM;
(2018)
Investigation of broadband terahertz generation from metasurface.
Optics Express
, 26
(11)
pp. 14241-14250.
10.1364/OE.26.014241.
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Abstract
The nonlinear metamaterials have been shown to provide nonlinear properties with high nonlinear conversion efficiency and in a myriad of light manipulation. Here we study terahertz generation from nonlinear metasurface consisting of single layer nanoscale split-ring resonator array. The terahertz generation due to optical rectification by the second-order nonlinearity of the split-ring resonator is investigated by a time-domain implementation of the hydrodynamic model for electron dynamics in metal. The results show that the nonlinear metasurface enables us to generate broadband terahertz radiation and free from quasi-phase-matching conditions. The proposed scheme provides a new concept of broadband THz source and designing nonlinear plasmonic metamaterials.
| Type: | Article |
|---|---|
| Title: | Investigation of broadband terahertz generation from metasurface |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1364/OE.26.014241 |
| Publisher version: | https://doi.org/10.1364/OE.26.014241 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Metamaterials, Nonlinear optics, Computational electromagnetic methods |
| UCL classification: | UCL 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/10056670 |
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