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
罗牧华, 张秋菊
Luo Mu-Hua(罗牧华) and Zhang Qiu-Ju(张秋菊)†
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.
中图分类号: (X-ray, γ-ray, and particle generation)