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Exact Timing of Returned Molecular Wavepacket |
| ZHANG Zhe1;WANG Ting-Ying1;ZHANG Gui-Zhong1;W.T. Hill III2 |
| 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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| Cite this article: |
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ZHANG Zhe, WANG Ting-Ying, ZHANG Gui-Zhong et al 2006 Chin. Phys. Lett. 23 3242-3244 |
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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 800 nm 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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Published: 01 December 2006
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