Research on physical mechanism of mode-locked free-electron laser based on electron beam phase space beating

Zhang Bo; Qi Zheng; Feng Chao; Zhao Zhentang

doi:10.11884/HPLPB202335.230090

Volume 35 Issue 9

Sep. 2023

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Article Navigation > High Power Laser and Particle Beams > 2023 > 35(9): 094001

Zhang Bo, Qi Zheng, Feng Chao, et al. Research on physical mechanism of mode-locked free-electron laser based on electron beam phase space beating[J]. High Power Laser and Particle Beams, 2023, 35: 094001. doi: 10.11884/HPLPB202335.230090

Citation:

Zhang Bo, Qi Zheng, Feng Chao, et al. Research on physical mechanism of mode-locked free-electron laser based on electron beam phase space beating[J]. High Power Laser and Particle Beams, 2023, 35: 094001. doi: 10.11884/HPLPB202335.230090

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Research on physical mechanism of mode-locked free-electron laser based on electron beam phase space beating

doi: 10.11884/HPLPB202335.230090

Zhang Bo^{1, 2
,},
Qi Zheng³,
Feng Chao^{2, 3},
Zhao Zhentang^{2, 3}

1.
Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
2.
University of Chinese Academy of Sciences, Beijing 100049, China
3.
Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201204, China

Received Date: 2023-04-18
Accepted Date: 2023-07-16
Rev Recd Date: 2023-07-14

Available Online: 2023-07-22

Publish Date: 2023-09-15

Abstract

Abstract

The theory, method, and experimental studies on mode-locked free-electron laser (FEL) have been of great interests in the world. In this paper, we propose a method to generate mode-locked multi-color free-electron laser radiation pulses based on the electron beam phase space beating. Utilizing an electron beam with head-tail energy chirp and the two modulator-chicane setups in the Shanghai Soft X-ray free-electron laser facility (SXFEL), multiple current pulse trains can be formed and mode-locked multi-color free electron laser pulses can be generated. The simulation results indicate that, with the help the 264 nm seed laser, bunching factor at the 18^th harmonic of the seed laser can be formed and ultimately mode-locked multi-color FEL radiation pulse with a central wavelength of approximately 14.58 nm can be generated. This study is of great significance for the development of the mode-locked FEL in China and the performance improvement of the SXFEL facility.
- free electron laser,
- mode-locking,
- frequency beating,
- beam manipulation

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References(14)

References

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