Khromova, I;
Mitrofanov, O;
(2017)
Near-field characterization of conductive micro-resonators for terahertz sensing.
In: Pereira, MF and Shulika, O, (eds.)
Proceedings of the NATO Advanced Research Workshop on THz for CBRN and Explosives Detection and Diagnosis.
(pp. pp. 23-28).
Springer: Dordrecht, Netherlands.
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Abstract
Near-field (NF) terahertz (THz) time-domain spectroscopy (TDS) is an excellent tool for direct studies of THz electromagnetic resonances occurring on a micrometre scale. Micro-resonators are at the heart of numerous promising THz sensing and detecting solutions. Experimental studies of individual micrometrescale THz resonances are essential, yet extremely challenging for the common far-field spectroscopic methods due to extreme sensitivity requirements. NF THz spectroscopy and microscopy are non-contact techniques for spectroscopic studies of individual micro-resonators and mapping the field patterns of THz resonant modes excited in individual conductive or insulating micro-objects. They give access to essential parameters of micro-resonators, including their resonance frequency, local field enhancement and quality factors. It allows for material and structural characterisation of micro-objects. Using the example of carbon microfibres, we show the advantages of NF THz TDS for non-contact THz conductivity probing and direct observation of the fundamental and the third-order surfaceplasmon resonance modes in conductive THz micro-resonators.
| Type: | Proceedings paper |
|---|---|
| Title: | Near-field characterization of conductive micro-resonators for terahertz sensing |
| Event: | NATO Advanced Research Workshop on THz for CBRN and Explosives Detection and Diagnosis, 3–5 November 2015, Çeşme, Turkey |
| ISBN-13: | 9789402410921 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1007/978-94-024-1093-8_3 |
| Publisher version: | https://doi.org/10.1007/978-94-024-1093-8_3 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. The final publication is available on https://link.springer.com/chapter/10.1007%2F978-94-024-1093-8_3. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Terahertz spectroscopy, Metamaterials, Carbon fibre, Near field |
| 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/10042692 |
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