| A Scaling Law of Photoionization in Ultrashort Pulses |
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| 作者姓名： | 张晓明 张敬涛 白丽华 龚旗煌 徐至展 |
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| 作者单位： | [1]State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, Beijing 100087 [2]State Key Laboratory of Hig Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Shanghai 201800 |
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| 基金项目： | Supported by the National Science Foundation of China under Grant No 60408008, the Natural Science Key Foundation of Shanghai under Grant No 04JC14036, and the Shanghai Rising-Star Programme. |
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| 摘 要： |
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| 关 键 词： | 标准法则 光致电离 超短波脉冲 数字解 激光技术 |
| 收稿时间： | 2005-12-19 |
| 修稿时间： | 2005-12-19 |
A Scaling Law of Photoionization in Ultrashort Pulses |
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| ZHANG Xiao-Ming, ZHANG Jing-Tao, BAI Li-Hua, GONG Qi-Suang, XU Zhi-Zhan.A Scaling Law of Photoionization in Ultrashort Pulses[J].Chinese Physics Letters,2006,23(7):1803-1805. |
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| Authors: | ZHANG Xiao-Ming ZHANG Jing-Tao BAI Li-Hua GONG Qi-Suang XU Zhi-Zhan |
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| Abstract: | By means of the numerical solution of time-dependent Schr6dinger equation, we verify a scaling law of photoionization in ultrashort pulses. We find that for a given carrier-envelope phase and duration of the pulse, identical photoionizations are obtained provided that when the central frequency of the pulse is enlarged by k times, the atomic binding potential is enlarged by k times, and the laser intensity is enlarged by ka times. The scaling law allows us to reach a significant control over direction of photoemission and offers exciting prospects of reaching similar physical processes in different interacting systems which constitutes a novel kind of coherent control. |
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