Dispersion in dielectric-lined waveguides designed for terahertz-driven deflection of electron beams
Dispersion in dielectric-lined waveguides designed for terahertz-driven deflection of electron beams
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DOI：
10.1063/5.0041391
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发表时间：
2021-04
影响因子：
4
通讯作者：
V. Georgiadis;A. Healy;M. Hibberd;G. Burt;S. Jamison;D. Graham
中科院分区：
文献类型：
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作者：
V. Georgiadis;A. Healy;M. Hibberd;G. Burt;S. Jamison;D. Graham
我们已经开发了介质内衬矩形波导结构的太赫兹（THz）驱动的100 keV电子束的超快偏转。该结构被设计成实现与共同传播的电子聚束的太赫兹相速度匹配。通过对电光采样测量的宽带相干太赫兹传输的时频分析，实验证实了相位匹配能力。分析确定了电子相互作用区的频率相关传播常数和集成THz锥形耦合器的传播特性。
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.