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A high-energy electron density modulator driven by an intense laser standing wave

Published online by Cambridge University Press:  30 April 2019

Shiyi Zhou ,
Zhijun Zhang ,
Chuliang Zhou ,
Zhongpeng Li ,
Ye Tian  and
Jiansheng Liu
Shiyi Zhou
Affiliation:
State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
Zhijun Zhang
Affiliation:
State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
Chuliang Zhou
Affiliation:
State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
Zhongpeng Li
Affiliation:
State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
Ye Tian*
Affiliation:
State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
Jiansheng Liu*
Affiliation:
State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China Department of Physics, Shanghai Normal University, Shanghai 200234, China IFSA Collaborative Innovation Center, Shanghai Jiao Tong University, Shanghai 200240, China Institute of Modern Optics, Nankai University, Tianjing 300000, China
*
Author for correspondence: Ye Tian, State Key Laboratory of High Field Laser Physics. Jiansheng Liu, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China. E-mails: tianye@siom.ac.cn, michaeljs_liu@siom.ac.cn
Author for correspondence: Ye Tian, State Key Laboratory of High Field Laser Physics. Jiansheng Liu, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China. E-mails: tianye@siom.ac.cn, michaeljs_liu@siom.ac.cn
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Abstract

A high energy electron density modulator from a high-intensity laser standing wave field is studied herein by investigating the ultrafast motion of electrons in the field. Electrons converge at the electric field antinodes, and the discrete electron density peaks modulated by the field located at the corresponding laser phases of kx = nπ, (n = 0, 1, 2, …), that is, the modulation period is 1/2 the wavelength of the individual laser. We also discussed the influence of the laser parameters such as laser intensity and waist size on the beam modulator. It is shown that a long interaction length (waist) or sufficiently high field intensity is essential for relativistic electron density modulation.

Keywords

Laser standing wave fieldrelativistic electron beamponderomotive force
Type
Research Article
Information
Laser and Particle Beams , Volume 37 , Issue 2 , June 2019 , pp. 197 - 202
Copyright
Copyright © Cambridge University Press 2019 

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Footnotes

*

Shiyi Zhou and Zhijun Zhang contributed equally to this paper.

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