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Terahertz Oscilloscope for Recording Time Information of Ultrashort Electron Beams

Lingrong Zhao, Zhe Wang, Heng Tang, Rui Wang, Yun Cheng, Chao Lu, Tao Jiang, Pengfei Zhu, Long Hu, Wei Song, Huida Wang, Jiaqi Qiu, Roman Kostin, Chunguang Jing, Sergey Antipov, Peng Wang, Jia Qi, Ya Cheng, Dao Xiang, and Jie Zhang
Phys. Rev. Lett. 122, 144801 – Published 9 April 2019
Physics logo See Synopsis: Ultrafast Oscilloscope for Ultrashort Electron Beam

Abstract

We propose and demonstrate a terahertz (THz) oscilloscope for recording time information of an ultrashort electron beam. By injecting a laser-driven THz pulse with circular polarization into a dielectric tube, the electron beam is swept helically such that the time information is uniformly encoded into the angular distribution that allows one to characterize both the temporal profile and timing jitter of an electron beam. The dynamic range of the measurement in such a configuration is significantly increased compared to deflection with a linearly polarized THz pulse. With this THz oscilloscope, nearly 50-fold longitudinal compression of a relativistic electron beam to about 15 fs (rms) is directly visualized with its arrival time determined with 3 fs accuracy. This technique bridges the gap between streaking of photoelectrons with optical lasers and deflection of relativistic electron beams with radio-frequency deflectors, and should have wide applications in many ultrashort electron-beam-based facilities.

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  • Received 20 December 2018

DOI:https://doi.org/10.1103/PhysRevLett.122.144801

© 2019 American Physical Society

Physics Subject Headings (PhySH)

Accelerators & BeamsAtomic, Molecular & Optical

Synopsis

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Ultrafast Oscilloscope for Ultrashort Electron Beam

Published 9 April 2019

Driving an electron beam into a helical pattern with terahertz electromagnetic pulses allows researchers to measure the beam’s complete shape with femtosecond resolution.

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Authors & Affiliations

Lingrong Zhao1,2, Zhe Wang1,2, Heng Tang1,2, Rui Wang1,2, Yun Cheng1,2, Chao Lu1,2, Tao Jiang1,2, Pengfei Zhu1,2, Long Hu3, Wei Song3, Huida Wang3, Jiaqi Qiu4, Roman Kostin5, Chunguang Jing5, Sergey Antipov5, Peng Wang6, Jia Qi6, Ya Cheng6,7, Dao Xiang1,2,8,*, and Jie Zhang1,2,†

  • 1Key Laboratory for Laser Plasmas (Ministry of Education), School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
  • 2Collaborative Innovation Center of IFSA (CICIFSA), Shanghai Jiao Tong University, Shanghai 200240, China
  • 3Science and Technology on High Power Microwave Laboratory, Northwest Institute of Nuclear Technology, Xi’an, Shanxi 710024, China
  • 4Nuctech Company Limited, Beijing 100084, China
  • 5Euclid Techlabs LLC, Bolingbrook, Illinois 60440, USA
  • 6State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • 7State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China
  • 8Tsung-Dao Lee Institute, Shanghai 200240, China

  • *dxiang@sjtu.edu.cn
  • jzhang1@sjtu.edu.cn

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Issue

Vol. 122, Iss. 14 — 12 April 2019

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