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

V. Georgiadis | Zendy; Alisa Healy | Zendy; M. T. Hibberd | Zendy; Graeme Burt | Zendy; S. P. Jamison | Zendy; D. M. Graham | Zendy

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

Author(s) -

V. Georgiadis,

Alisa Healy,

M. T. Hibberd,

Graeme Burt,

S. P. Jamison,

D. M. Graham

Publication year - 2021

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/5.0041391

Subject(s) - terahertz radiation , optics , phase velocity , dielectric , electron , deflection (physics) , materials science , ultrashort pulse , broadband , propagation constant , optoelectronics , physics , laser , quantum mechanics

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.

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