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Generating Isolated Attosecond X-Ray Pulses by Wavefront Control in a Seeded Free-Electron Laser

Yaozong Xiao Chao Feng Bo Liu

Yaozong Xiao, Chao Feng, Bo Liu. 2022: Generating Isolated Attosecond X-Ray Pulses by Wavefront Control in a Seeded Free-Electron Laser. 超快科学, 2022(4). doi: 10.34133/2022/9812478
引用本文: Yaozong Xiao, Chao Feng, Bo Liu. 2022: Generating Isolated Attosecond X-Ray Pulses by Wavefront Control in a Seeded Free-Electron Laser. 超快科学, 2022(4). doi: 10.34133/2022/9812478
Yaozong Xiao, Chao Feng, Bo Liu. 2022: Generating Isolated Attosecond X-Ray Pulses by Wavefront Control in a Seeded Free-Electron Laser. Ultrafast Science, 2022(4). doi: 10.34133/2022/9812478
Citation: Yaozong Xiao, Chao Feng, Bo Liu. 2022: Generating Isolated Attosecond X-Ray Pulses by Wavefront Control in a Seeded Free-Electron Laser. Ultrafast Science, 2022(4). doi: 10.34133/2022/9812478

Generating Isolated Attosecond X-Ray Pulses by Wavefront Control in a Seeded Free-Electron Laser

doi: 10.34133/2022/9812478
基金项目: 

The authors thank H. Sun, W. J. Fan, and X. F. Wang for helpful discussions and useful comments. This work was supported by the National Natural Science Foundation of China (12122514, 11975300) and the Shanghai Science and Technology Committee Rising-Star Program (20QA1410100).

详细信息
    通讯作者:

    Correspondence should be addressed to Chao Feng

Generating Isolated Attosecond X-Ray Pulses by Wavefront Control in a Seeded Free-Electron Laser

Funds: 

The authors thank H. Sun, W. J. Fan, and X. F. Wang for helpful discussions and useful comments. This work was supported by the National Natural Science Foundation of China (12122514, 11975300) and the Shanghai Science and Technology Committee Rising-Star Program (20QA1410100).

  • 摘要:

    We proposed a simple method based on the seeded free-electron laser (FEL) to generate fully coherent X-ray pulses with durations at dozens of attosecond level. The echo-enabled harmonic generation technique is utilized to generate the fully coherent laser pulse covering the water-window range. A wavefront rotation laser is adopted as the seed to tailor the longitudinal contour of the radiation pulse. Due to the sensitivity of seeded FEL to external lasers, this method can effectively inhibit the bunching of the adjacent regions while preserving an isolated bunching in the middle. Sending such an electron beam into a short undulator, simulation results show that ultrashort X-ray pulses with peak power of GW level and pulse duration as short as 86 attoseconds can be generated. The proposed scheme can make it possible to study the electronic dynamic of the valence electrons of which the time scale is about 100 attoseconds and may open up a new frontier of ultrafast science.

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出版历程
  • 收稿日期:  2022-04-01
  • 修回日期:  2022-07-06
  • 刊出日期:  2022-07-30

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