| ATOMIC AND MOLECULAR PHYSICS |
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Effects of Bounding Potential on High-Order Harmonic Generation with H2+ |
ZHAO Jing, ZHAO Zeng-Xiu |
| Department of Physics, National University of Defense Technology, Changsha 410073 |
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| Cite this article: |
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ZHAO Jing, ZHAO Zeng-Xiu 2010 Chin. Phys. Lett. 27 063301 |
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Abstract We present harmonic spectra from hydrogen molecular ions with different ionization energy Ip. By comparing the recombination matrix element from helium ions and hydrogen molecular ions, we verify that the interference effect in high-order harmonic generation originates from the recombination interference. A numerical study on recombination matrix elements in 1D shows that ω=Ek+Ip holds only when an exact continuum wavefunction is used, and the positions of extrema in harmonic spectra can be predicted accurately. We demonstrate that the positions of extrema in harmonic spectra are mainly affected by bounding potential dependence of the recombination interference.
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| Keywords:
33.20.Xx
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Received: 10 February 2010
Published: 25 May 2010
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| PACS: |
33.20.Xx
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(Spectra induced by strong-field or attosecond laser irradiation)
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