THz-driven electron emission from metallic surfaces

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

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 languageEnglish
Title of host publicationProceedings of 48th International Conference on Infrared, Millimeter, and Terahertz Waves
Number of pages2
PublisherIEEE
Publication date22 Sept 2023
Article number10299014
ISBN (Print)979-8-3503-3661-0
DOIs
Publication statusPublished - 22 Sept 2023
Event48th International Conference on Infrared, Millimeter, and Terahertz Waves - Montreal, Canada
Duration: 17 Sept 202322 Sept 2023

Conference

Conference48th International Conference on Infrared, Millimeter, and Terahertz Waves
Country/TerritoryCanada
CityMontreal
Period17/09/202322/09/2023

Keywords

  • Surface waves
  • Tunneling
  • Metasurfaces
  • Electron emission
  • Dielectrics
  • Coatings
  • Antennas

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