Electron-Terahertz Interaction in Dielectric-Lined Waveguide Structures for Electron Manipulation

TL;DR

This paper investigates how dielectric-lined waveguides driven by terahertz pulses can be optimized for manipulating electrons, focusing on deflection, acceleration, and focusing, with a specific design for 100 keV electrons at 0.5 THz.

Contribution

It presents an optimized rectangular dielectric-lined waveguide for electron deflection at 0.5 THz and compares DLWs with corrugated waveguides to evaluate their relative advantages.

Findings

Optimized rectangular DLW for 100 keV electron deflection.

Effect of electron bunch timing on deflection maximization.

Comparison of DLWs and corrugated waveguides advantages.

Abstract

Terahertz-driven dielectric-lined waveguides (DLWs) have uses in electron manipulation; in particular deflection, acceleration, and focussing. A rectangular DLW has been optimised for deflection of 100 keV electrons using a THz pulse with a centre frequency 0.5 THz. Electron-THz interaction and the effect of electron bunch injection timing on maximising deflection is presented. DLWs and corrugated waveguides are compared to discuss relative advantages and disadvantages.