中国物理B ›› 2022, Vol. 31 ›› Issue (4): 43302-043302.doi: 10.1088/1674-1056/ac29a8

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Enhancement of isolated attosecond pulse generation by using long gas medium

Yueying Liang(梁玥瑛)1,3, Xinkui He(贺新奎)1,2,3,†, Kun Zhao(赵昆)1, Hao Teng(滕浩)1, and Zhiyi Wei(魏志义)1,2,3,‡   

  1. 1 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    2 Songshan Lake Materials Laboratory, Dongguan 523808, China;
    3 University of Chinese Academy of Sciences, Beijing 100049, China
  • 收稿日期:2021-06-16 修回日期:2021-09-13 接受日期:2021-09-24 出版日期:2022-03-16 发布日期:2022-03-10
  • 通讯作者: Xinkui He, Zhiyi Wei E-mail:xinkuihe@iphy.ac.cn;zywei@iphy.ac.cn
  • 基金资助:
    Project supported by the National Key R&D Program of China (Grant No. 2018YFB1107200) and the National Natural Science Foundation of China (Grant Nos. 11974416 and 91850209).

Enhancement of isolated attosecond pulse generation by using long gas medium

Yueying Liang(梁玥瑛)1,3, Xinkui He(贺新奎)1,2,3,†, Kun Zhao(赵昆)1, Hao Teng(滕浩)1, and Zhiyi Wei(魏志义)1,2,3,‡   

  1. 1 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    2 Songshan Lake Materials Laboratory, Dongguan 523808, China;
    3 University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2021-06-16 Revised:2021-09-13 Accepted:2021-09-24 Online:2022-03-16 Published:2022-03-10
  • Contact: Xinkui He, Zhiyi Wei E-mail:xinkuihe@iphy.ac.cn;zywei@iphy.ac.cn
  • Supported by:
    Project supported by the National Key R&D Program of China (Grant No. 2018YFB1107200) and the National Natural Science Foundation of China (Grant Nos. 11974416 and 91850209).

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摘要： Isolated attosecond pulse generation in argon is theoretically investigated for different gas pressures and medium lengths. The output of attosecond pulse is effectively enhanced by using a longer gas medium with optimized pressure. The peak intensity of the attosecond pulse by using 6 mm gas medium is doubled compared with that of 1-3 mm gas cell, which is usually used in the experiment. Our simulation shows that the distortion of the driving laser waveform and the absorption are the main factors that limit the output of the attosecond pulse for the long gas medium. Optimized generation condition could be found by balancing the medium length and pressure.

关键词: isolated attosecond pulse, high-order harmonic generation

Abstract: Isolated attosecond pulse generation in argon is theoretically investigated for different gas pressures and medium lengths. The output of attosecond pulse is effectively enhanced by using a longer gas medium with optimized pressure. The peak intensity of the attosecond pulse by using 6 mm gas medium is doubled compared with that of 1-3 mm gas cell, which is usually used in the experiment. Our simulation shows that the distortion of the driving laser waveform and the absorption are the main factors that limit the output of the attosecond pulse for the long gas medium. Optimized generation condition could be found by balancing the medium length and pressure.

Key words: isolated attosecond pulse, high-order harmonic generation

中图分类号:  (Spectra induced by strong-field or attosecond laser irradiation)

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