| Exact Timing of Returned Molecular Wavepacket |
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| 作者姓名： | 张喆 王廷营 张贵忠 希尔三世 |
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| 作者单位： | [1]Key Lab of Optoelectronic Information and Technical Science of MOE, College of Precision Instrument and Optoelectronics [2]Institute for Physical Science and Technology, University of Maryland, College Park, MD20742, USA |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant No 10674100, and the Tianjin Municipal Government Project under Grant No 04360I0II. |
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| 摘 要： |
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| 关 键 词： | 激光场 分子光电离 含时波包 精确定时 光周期 |
| 收稿时间： | 2006-09-04 |
| 修稿时间： | 2006-09-04 |
Exact Timing of Returned Molecular Wavepacket |
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| ZHANG Zhe,WANG Ting-Ying,ZHANG Gui-Zhong,W.T. Hill III.Exact Timing of Returned Molecular Wavepacket[J].Chinese Physics Letters,2006,23(12):3242-3244. |
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| Authors: | ZHANG Zhe WANG Ting-Ying ZHANG Gui-Zhong WT Hill III |
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| Affiliation: | ¹Key Lab of Optoelectronic Information and Technical Science of MOE, College of Precision Instrument and Optoelectronics
²Institute for Physical Science and Technology, University of Maryland, College Park, MD20742, USA |
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| Abstract: | An ionizing wavepacket of electron will re-visit its parent molecular ion during photoionization by strong laser field. This scenario is associated with physical concepts such as molecular re-scattering/collision, interference, diffraction, molecular clock, and generation of XUV light via high-order harmonic generation. On the workbench of a reduced dimensionality model of molecular hydrogen ions irradiated by laser pulse of 0.01-10.0 a.u. intensities, one-cycle pulsewidth, and 800nm wavelength, by deploying a momentum operator on the time-dependent wavefunction of an ionizing wavepacket, we can determine, in a precise manner, the exact time instant for the re-visiting electron to come back to the cation position. The time value is 57.6% of an optical cycle of the exciting laser pulse. This result may be useful in attosecond pump-probe experiments or molecular clock applications. |
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| Keywords: | 31 15 Qg 33 80 Rv 32 80 Rm |
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