Siday, T;
Mitrofanov, O;
(2019)
Efficiency Enhancement of Scattering Near-Field Probes.
In:
Proceedings of the 2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz).
IEEE: Paris, France.
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Abstract
We measure, for the first time, the scattering efficiency of resonant terahertz (THz) probes for scattering-type THz near-field microscopy. We fabricate the probes by placing an indium 'antenna' directly on the tine of a quartz tuning fork (QTF), which we use as an atomic force microscope (AFM) probe in tapping mode. THz time-domain spectroscopy (TDS) of the THz field scattered from the probe shows that the scattering efficiency of the indium antenna exhibits resonant enhancement determined by the antenna length. These resonant scattering probes can enable THz near-field imaging applications where THz contrast is weak, such as 2D materials or biological systems.
| Type: | Proceedings paper |
|---|---|
| Title: | Efficiency Enhancement of Scattering Near-Field Probes |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/IRMMW-THz.2019.8873922 |
| Publisher version: | https://doi.org/10.1109/IRMMW-THz.2019.8873922 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Scattering , Probes , Indium , Antenna measurements , Microscopy , Resonant frequency , Quantum cascade lasers |
| 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/10094127 |
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