中国物理B ›› 2012, Vol. 21 ›› Issue (6): 64216-064216.doi: 10.1088/1674-1056/21/6/064216

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

High-order harmonic generation in sub-one-cycle regime

向阳a, 钮月萍b, 祁义红b, 龚尚庆b   

  1. a. School of Computer Science and Thechnology, Henan Polytechnic University, Jiaozuo 454000, China;
    b. Department of Physics, East China University of Science and Technology, Shanghai 200237, China
  • 收稿日期:2011-10-27 修回日期:2011-12-27 出版日期:2012-05-01 发布日期:2012-05-01
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 10734080, 11074263, 60978013, 60921004, and 10874194) and the Doctor Fund of Henan Polytechnic University (Grant No. B2011-076).

High-order harmonic generation in sub-one-cycle regime

Xiang Yang(向阳)a), Niu Yue-Ping(钮月萍) b)†, Qi Yi-Hong(祁义红)b), and Gong Shang-Qing(龚尚庆)b)‡ger   

  1. a. School of Computer Science and Thechnology, Henan Polytechnic University, Jiaozuo 454000, China;
    b. Department of Physics, East China University of Science and Technology, Shanghai 200237, China
  • Received:2011-10-27 Revised:2011-12-27 Online:2012-05-01 Published:2012-05-01
  • Contact: Niu Yue-Ping, Gong Shang-Qing E-mail:niuyp@ecust.edu.cn; sqgong@ecust.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 10734080, 11074263, 60978013, 60921004, and 10874194) and the Doctor Fund of Henan Polytechnic University (Grant No. B2011-076).

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摘要： We theoretically investigate the high-order harmonic generation from the hydrogen atom driven by the laser pulses with the durations less than the optical cycle. It is found that the switching term of the laser field may have an obvious influence on the cutoff, intensity or plateau structure of the high-order harmonic spectrum. Generally speaking, the switching term can shorten the cutoff of the high-order harmonic spectrum for a relatively longer pulse and extend the cutoff for a relatively shorter pulse.

关键词: high-order harmonic generation, sub-one-cycle pulse, switching term

Abstract: We theoretically investigate the high-order harmonic generation from the hydrogen atom driven by the laser pulses with the durations less than the optical cycle. It is found that the switching term of the laser field may have an obvious influence on the cutoff, intensity or plateau structure of the high-order harmonic spectrum. Generally speaking, the switching term can shorten the cutoff of the high-order harmonic spectrum for a relatively longer pulse and extend the cutoff for a relatively shorter pulse.

Key words: high-order harmonic generation, sub-one-cycle pulse, switching term

中图分类号:  (Frequency conversion; harmonic generation, including higher-order harmonic generation)

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