Abstract
We showcase THz-driven electron emission from metal-based metasurfaces. The effect of the gap-size of bow-tie antennas on the electron emission and emission threshold is investigated. Furthermore, the effect of a thin layer of dielectric coating on top of metallic antenna structures is characterised. In both cases, conclusions on how to improve the local field enhancement and thus the tunneling current are drawn. A narrower gap-size leads to improved enhancement for bow-tie antennas, and thin coatings can increase or reduce the tunneling current, depending of their thickness.
Original language | English |
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Title of host publication | Proceedings of 48th International Conference on Infrared, Millimeter, and Terahertz Waves |
Number of pages | 2 |
Publisher | IEEE |
Publication date | 22 Sept 2023 |
Article number | 10299014 |
ISBN (Print) | 979-8-3503-3661-0 |
DOIs | |
Publication status | Published - 22 Sept 2023 |
Event | 48th International Conference on Infrared, Millimeter, and Terahertz Waves - Montreal, Canada Duration: 17 Sept 2023 → 22 Sept 2023 |
Conference
Conference | 48th International Conference on Infrared, Millimeter, and Terahertz Waves |
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Country/Territory | Canada |
City | Montreal |
Period | 17/09/2023 → 22/09/2023 |
Keywords
- Surface waves
- Tunneling
- Metasurfaces
- Electron emission
- Dielectrics
- Coatings
- Antennas