Hale, LL;
Jung, H;
Sarma, R;
Harris, CT;
Luk, TS;
Addamane, SJ;
Reno, JL;
... Brener, I; + view all
(2022)
Sensitivity and Noise in THz Photoconductive Metasurface Detectors.
In:
2022 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz).
IEEE: Delft, Netherlands.
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Abstract
Photoconductive antenna THz detectors based on highly absorbing LT-GaAs metasurfaces enable high sensitivity and high signal-to-noise ratio (> 106) at optical gate powers as low as 5 μW. By investigating the dependence of detector performance on optical gate power, we compare several metasurface detectors with standard PCAs and develop a general model for quantifying the sensitivity and optimal gate power for detector operation. We also show that the LT-GaAs metasurface can even enhance sub bandgap absorption, enabling the use of these detectors in telecom wavelength systems.
| Type: | Proceedings paper |
|---|---|
| Title: | Sensitivity and Noise in THz Photoconductive Metasurface Detectors |
| Event: | 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz) |
| Dates: | 28 Aug 2022 - 2 Sep 2022 |
| ISBN-13: | 9781728194271 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/IRMMW-THz50927.2022.9895560 |
| Publisher version: | https://doi.org/10.1109/IRMMW-THz50927.2022.989556... |
| 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: | Optical fibers, Optical fiber sensors, Sensitivity, Absorption, Detectors, Logic gates, Optical detectors |
| UCL classification: | 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 UCL > Provost and Vice Provost Offices > UCL BEAMS UCL |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10158201 |
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