Dispersion in dielectric-lined waveguides designed for terahertz-driven deflection of electron beams

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  • External authors:
  • A. L. Healy
  • Morgan Hibberd
  • G Burt
  • S. P. Jamison


We have developed dielectric-lined rectangular waveguide structures for terahertz (THz)-driven ultrafast deflection of 100 keV electron beams. The structures were designed to achieve THz phase velocity matching with co-propagating electron bunches. The phase-matching capability was experimentally confirmed through time-frequency analysis of the broadband coherent THz transmission measured by electro-optic sampling. The analysis determined both the frequency-dependent propagation constants in the electron interaction region and the propagation characteristics of the integrated THz tapered coupler.

Bibliographical metadata

Original languageEnglish
Article number 144102
JournalApplied Physics Letters
Issue number14
Publication statusPublished - 6 Apr 2021

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