| Harmonic Enhancement Mechanism of a Superposition State Atom Irradiated by Short Pulses |
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| 引用本文： | 杨玉军 陈基根 黄宇欣 郭福明 张红星 孙家钟 朱红玉 王丽 王辉 朱颀人. Harmonic Enhancement Mechanism of a Superposition State Atom Irradiated by Short Pulses[J]. 中国物理快报, 2007, 24(7): 1894-1897 |
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| 作者姓名： | 杨玉军 陈基根 黄宇欣 郭福明 张红星 孙家钟 朱红玉 王丽 王辉 朱颀人 |
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| 作者单位： | [1]institute of Atomic and Molecular Physics, Jilin University, Changchun 130012 [2]Institute of Theoretical Chemistry, Jilin University, Changchun 130012 [3]Department of Physics, Taizhou University, Linhai 317000 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant Nos 10474028 and 10604021, the Specialized Research Fund for the Doctoral Programme of Higher Education of China under Grant No 20040183041. |
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| 摘 要： | We investigate the high-order harmonic generation （HHG） of a model atom whose initial state is prepared in a superposition of its ground state and an excited state irradiated by different duration laser pulses. Compared to the HHG generated from an atom whose initial state is in its ground state, its conversion efficiency obtains some enhancement. The enhancement originates from the higher ionization rate （rather than the ionization yield） of the atom with superposition initial state.
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| 关 键 词： | 谐波增大机制 叠加 原子照射 脉冲 |
| 收稿时间： | 2006-12-05 |
| 修稿时间： | 2006-12-05 |
Harmonic Enhancement Mechanism of a Superposition State Atom Irradiated by Short Pulses |
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| YANG Yu-Jun,CHEN Ji-Gen,HUANG Yu-Xin,GUO Fu-Ming,ZHANG Hong-Xing,SUN Jia-Zhong,ZHU Hong-Yu,WANG Li,WANG Hui,ZHU Qi-Ren. Harmonic Enhancement Mechanism of a Superposition State Atom Irradiated by Short Pulses[J]. Chinese Physics Letters, 2007, 24(7): 1894-1897 |
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| Authors: | YANG Yu-Jun CHEN Ji-Gen HUANG Yu-Xin GUO Fu-Ming ZHANG Hong-Xing SUN Jia-Zhong ZHU Hong-Yu WANG Li WANG Hui ZHU Qi-Ren |
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| Affiliation: | Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012Institute of Theoretical Chemistry, Jilin University, Changchun 130012Department of Physics, Taizhou University, Linhai 317000 |
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| Abstract: | We investigate the high-order harmonic generation (HHG) of a model atomwhose initial state is prepared in a superposition of its ground state and an excited state irradiated by different duration laser pulses. Compared to the HHG generated from an atom whose initial state is in its ground state, its conversion efficiency obtains some enhancement. The enhancement originates from the higher ionization rate (rather than the ionization yield) of the atom with superposition initial state. |
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| Keywords: | 32.80.Rm 42.65.Ky |
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