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 cont...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 T ≈ 8.6 as and intensity I≈ 3.08 × 10^20 W.cm-2 can be generated.展开更多
基金Project supported by the Natural Science Foundation of Shandong Province of China (Grant No.ZR2009AQ009)the National Basic Research Program of China (Grant No.2011CB808100)
文摘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 T ≈ 8.6 as and intensity I≈ 3.08 × 10^20 W.cm-2 can be generated.
