Hale, Lucy L;
Siday, Thomas;
Mitrofanov, Oleg;
(2023)
Near-field imaging and spectroscopy of terahertz resonators and metasurfaces [Invited].
Optical Materials Express
, 13
(11)
pp. 3068-3086.
10.1364/OME.502318.
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Abstract
Terahertz (THz) metasurfaces have become a key platform for engineering light-matter interaction at THz frequencies. They have evolved from simple metallic resonator arrays into tunable and programmable devices, displaying ultrafast modulation rates and incorporating emerging quantum materials. The electrodynamics which govern metasurface operation can only be directly revealed at the scale of subwavelength individual metasurface elements, through sampling their evanescent fields. It requires near-field spectroscopy and imaging techniques to overcome the diffraction limit and provide spatial resolution down to the nanoscale. Through a series of case studies, this review provides an in-depth overview of recently developed THz near-field microscopy capabilities for research on metamaterials.
| Type: | Article |
|---|---|
| Title: | Near-field imaging and spectroscopy of terahertz resonators and metasurfaces [Invited] |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1364/OME.502318 |
| Publisher version: | http://dx.doi.org/10.1364/ome.502318 |
| Language: | English |
| Additional information: | Published by Optica Publishing Group under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. |
| Keywords: | Science & Technology, Technology, Physical Sciences, Materials Science, Multidisciplinary, Optics, Materials Science, ANALYTICAL-MODEL, SPOT SIZES, NANOSCOPY, PROBE, PROPAGATION, POLARITONS, MICROSCOPY, PLASMONS, WAVES, LASER |
| 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-pp.ucl.ac.uk/id/eprint/10187843 |
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