| 初始位相对超短脉冲强激光场高次谐波辐射的影响 |
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| 引用本文： | 王迎松,徐至展. 初始位相对超短脉冲强激光场高次谐波辐射的影响[J]. 物理学报, 1999, 48(6): 1023-1029 |
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| 作者姓名： | 王迎松 徐至展 |
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| 作者单位： | 中国科学院上海光学精密机械研究所强光光学开放研究实验室，上海 201800 |
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| 基金项目： | 中国科学院“九五”基础性研究重大项目资助的课题. |
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| 摘 要： | 过求解含时Schrdinger方程，用加窗Fourier分析的方法，从理论上分析了入射激光场的初始位相对超短强激光场高位谐波辐射的影响．发现相对于较长的入射激光脉冲其激光场初始位相对超短脉冲高次谐波辐射的影响非常显著，对这一问题作了比较详细的探讨.关键词：
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| 关 键 词： | 激光场 超短脉冲 高次谐波辐射 初始位相 |
| 收稿时间： | 1998-11-13 |
PHASE-DEPENDENCE OF HIGH-ORDER HARMONIC SPECTRA WITH ULTRASHORT LASER PULSES |
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| WANG YING-SONG and XU ZHI-ZHAN. PHASE-DEPENDENCE OF HIGH-ORDER HARMONIC SPECTRA WITH ULTRASHORT LASER PULSES[J]. Acta Physica Sinica, 1999, 48(6): 1023-1029 |
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| Authors: | WANG YING-SONG and XU ZHI-ZHAN |
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| Abstract: | High-order harmonic spectra are obtained by numerically solving the one-dimension time-dependent Schr?dinger equation with single-active-electron approximation. The influence of the initial phase of the excitation field on the single-atom high harmonic generation is analysized through Gabor analysis of the acceleration of the atomic dipole. The influence of the initial phase on the process of the high harmonic generation stronger for the shorter-duration pulses than for the longer case. A pulse train or a single pulse of subfemtosecond level could be obtained by high harmonic generation through the adjustment of the phase of the excitation laser field.
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