Conference paper
Fundamentals for a terahertz-driven electron gun
We present simulations showing how metallic dipole structures can be used as a fundamental platform for electron field emission (EFE) enabled by a strong terahertz (THz) transient. We present space-time mapping of the ultrafast dynamics of EFE with an approximately free-standing dipole versus two dipoles placed with a small gap in between.
We conclude that it is possible to make ultra-bright electron bunches shorter than 1 ps and accelerate them to the low keV range over 15 mu m using only a single THz transient. Our results are fundamental to understand and build a THz-driven electron gun.
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 2017 |
| Pages: | 197-198 |
| Proceedings: | 17th International Conference on Numerical Simulation of Optoelectronic Devices |
| ISBN: | 1509053239 , 1509053247 , 9781509053230 and 9781509053247 |
| ISSN: | 21583242 and 21583234 |
| Types: | Conference paper |
| DOI: | 10.1109/NUSOD.2017.8010059 |
| ORCIDs: | Lange, Simon Lehnskov and Jepsen, Peter Uhd |
Acceleration Dipole antennas EFE Electron guns Solid modeling Substrates Transient analysis electron field emission electron guns free-standing dipole metallic dipole structures particle beam bunching single THz transient space-time mapping terahertz metamaterials terahertz wave devices terahertz-driven electron gun ultra-bright electron bunches ultrafast dynamics
