Continuously tunable narrow-band terahertz generation with a dielectric lined waveguide driven by short electron bunches

T. H. Pacey, Y. Saveliev, A. Healy, P. G. Huggard, B. Alderman, P. Karataev, K. Fedorov, G. Xia

Research output: Contribution to journalArticle


A continuously tunable narrow-band terahertz source based on Cherenkov wakefield generation in a dielectric lined waveguide driven by short sub-picosecond electron bunches has been experimentally demonstrated. A large tunability range of 0.55-0.95 THz was achieved by implementing the waveguide design as a planar structure with variable 0.15-1.10 mm gap and thin 25 μm dielectric layers. The source operates essentially in a single mode regime with higher order modes of negligible intensity. THz pulse energy was measured across the tunable range and compared with theory.

Original languageEnglish
Article number091302
JournalPhysical Review Accelerators and Beams
Issue number9
Publication statusPublished - 12 Sep 2019
Externally publishedYes


ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)
  • Surfaces and Interfaces

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