中国物理B ›› 2011, Vol. 20 ›› Issue (8): 85201-085201.doi: 10.1088/1674-1056/20/8/085201

• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇    下一篇

Generation of a single attosecond pulse from an overdense plasma surface driven by a laser pulse with time-dependent polarization

罗牧华, 张秋菊   

  1. College of Physics and Electronics, Shandong Normal University, Jinan 250014, China
  • 收稿日期:2010-12-24 修回日期:2011-04-01 出版日期:2011-08-15 发布日期:2011-08-15
  • 基金资助:
    Project supported by the Natural Science Foundation of Shandong Province of China (Grant No. ZR2009AQ009) and the National Basic Research Program of China (Grant No. 2011CB808100).

Generation of a single attosecond pulse from an overdense plasma surface driven by a laser pulse with time-dependent polarization

Luo Mu-Hua(罗牧华) and Zhang Qiu-Ju(张秋菊)   

  1. College of Physics and Electronics, Shandong Normal University, Jinan 250014, China
  • Received:2010-12-24 Revised:2011-04-01 Online:2011-08-15 Published:2011-08-15
  • Supported by:
    Project supported by the Natural Science Foundation of Shandong Province of China (Grant No. ZR2009AQ009) and the National Basic Research Program of China (Grant No. 2011CB808100).

摘要: The influence of time-dependent polarization on attosecond pulse generation from an overdense plasma surface driven by laser pulse is discussed analytically and numerically. The results show that the frequency of controlling pulse controls the number and interval of the generated attosecond pulse, that the generation moment of the attosecond pulse is dominated by the phase difference between the controlling and driving pulses, and that the amplitude of the controlling pulse affects the intensity of the attosecond pulse. Using the method of time-dependent polarization, a “single” ultra-strong attosecond pulse with duration τ ≈ 8.6 as and intensity I ≈ 3.08 × 1020 W·cm-2 can be generated.

Abstract: The influence of time-dependent polarization on attosecond pulse generation from an overdense plasma surface driven by laser pulse is discussed analytically and numerically. The results show that the frequency of controlling pulse controls the number and interval of the generated attosecond pulse, that the generation moment of the attosecond pulse is dominated by the phase difference between the controlling and driving pulses, and that the amplitude of the controlling pulse affects the intensity of the attosecond pulse. Using the method of time-dependent polarization, a “single” ultra-strong attosecond pulse with duration τ ≈ 8.6 as and intensity I ≈ 3.08 × 1020 W·cm-2 can be generated.

Key words: attosecond pulse, overdense plasma, particle-in-cell simulation

中图分类号:  (X-ray, γ-ray, and particle generation)

  • 52.38.Ph
52.59.Hq (Dense plasma focus) 52.65.Rr (Particle-in-cell method)