| 激光短脉冲作用下原子吸收的超阈值离化 |
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| 引用本文： | 张文清,谭维翰. 激光短脉冲作用下原子吸收的超阈值离化[J]. 物理学报, 1991, 40(11): 1755-1764 |
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| 作者姓名： | 张文清 谭维翰 |
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| 作者单位： | 中国科学院上海光学精密机械研究所,上海,201800 |
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| 摘 要： | 在考虑入射光的空间和时间分布的基础上,求解原子吸收的超阈值离化(ATI)问题。结果发现,本文模型不仅可以解释随激光强度增大离化谱的低能峰压缩及整个离化由低阶向高阶移动等实验现象,更重要的是解释了在短脉冲情况下表现出来的峰值红移在长脉冲下趋于消失的实验结果。关键词：
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| 关 键 词： | 激光 原子吸收 超阈值离化 |
| 收稿时间： | 1990-10-25 |
| 修稿时间： | 1991-04-03 |
ABOVE-THRESHOLD-IONIZATION BY MULTIPHOTON ABSORPTION OF ATOM UNDER SHORT LASER PULSE |
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| ZHANG WEN-QING and TAN WEI-HAN. ABOVE-THRESHOLD-IONIZATION BY MULTIPHOTON ABSORPTION OF ATOM UNDER SHORT LASER PULSE[J]. Acta Physica Sinica, 1991, 40(11): 1755-1764 |
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| Authors: | ZHANG WEN-QING and TAN WEI-HAN |
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| Abstract: | The Above-threshold-ionization(ATI) Spectrum of electrons produced by multiphoton absorption of atom has been obtained with spatial Gauss and temporal Sech shape of the incident laser pulse. It is found that our model can explain many phenomena such as peak suppression and switching. In addition, what is more important is that we can explain the red shift of the peaks decreases to zero gradually, as the pulse width changes from short to long pulse regime. |
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