Almond, N;
Hermans, R;
Hale, L;
Kindness, S;
Michailow, W;
Wei, B;
Romain, X;
... Mitrofanov, O; + view all
(2020)
Terahertz aperture SNOM mapping of metamaterial coupled resonators.
In: Engheta, N and Noginov, MA and Zheludev, NI, (eds.)
Metamaterials, Metadevices, and Metasystems 2020.
SPIE: California, USA.
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Abstract
Metamaterials have emerged as the basis of a novel optoelectronic platform operating in the terahertz (THz) range, due to their versatility and strong light-matter interaction. The necessary design of efficient modulators and detectors requires a detailed investigation of metamaterial resonances and their interplay with an active medium, e.g. graphene. An aperture-SNOM (a-SNOM) system based on picosecond THz pulses was used to investigate the spectral characteristics of a set of lithographically tuned metamaterial coupled resonators. This approach allowed the mapping of the supported E-field of each resonator a few microns from the device plane, yielding bonding and antibonding modes reminiscent of electromagnetic induced transparency.
| Type: | Proceedings paper |
|---|---|
| Title: | Terahertz aperture SNOM mapping of metamaterial coupled resonators |
| Event: | SPIE Nanoscience + Engineering, 2020 |
| Location: | Online conference |
| Dates: | 24 August 2020 - 28 August 2020 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1117/12.2568045 |
| Publisher version: | https://doi.org/10.1117/12.2568045 |
| 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. |
| 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/10108927 |
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