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Terahertz aperture SNOM mapping of metamaterial coupled resonators

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. Green open access

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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 > 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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