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Particles 2018, 1(1), 253-259; https://doi.org/10.3390/particles1010019

Generation of THz Modulated Electron Bunches Using Transversally Polarized Waves to Drive a Dielectric Dual-Grating

National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China
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Received: 12 October 2018 / Revised: 8 November 2018 / Accepted: 8 November 2018 / Published: 9 November 2018
(This article belongs to the Special Issue Superradiances from Ultra Short Electron Bunch Beam)
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Abstract

We propose and design a dual dielectric grating structure for generating electron bunches with THz repetition frequency. Here we apply transversally polarized sub-terahertz waves to transversally illuminate a dielectric dual-grating, within which the sinusoidally varied deflection fields are induced and exerted on the electron bunches passing through the structure. The velocities of electrons within the bunches are modulated in the transversal direction, which then leads to the generation of a train of micro-bunches. The spectra of these micro-bunches have a series of profound high harmonics in the terahertz region. The simulation result of the electron beam’s bunching behavior is discussed in this paper. View Full-Text
Keywords: dielectric dual-grating; transverse velocity modulator; microbunching; THz dielectric dual-grating; transverse velocity modulator; microbunching; THz
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Liang, L.; Liu, W.; Jia, Q.; Lu, Y. Generation of THz Modulated Electron Bunches Using Transversally Polarized Waves to Drive a Dielectric Dual-Grating. Particles 2018, 1, 253-259.

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