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Influence of the initial electronic state on minima of high-order harmonic spectrum radiated from hydrogen molecular ion |
Hui-Fang Cui(崔会芳), Xiang-Yang Miao(苗向阳) |
College of Physics and Information Engineering, Shanxi Normal University, Linfen 041004, China |
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Abstract We theoretically investigate the high-order harmonic generation of the one-dimensional hydrogen molecular ion at fixed intermediate internuclear distance, driven by a multicycle laser field. Our results show that the initial electronic state of the hydrogen molecular ion affects the modulation of the high-order harmonic spectrum, especially the positions of the minima. Based on the two-state model, the underlying physical mechanism of the minimum is analyzed and discussed. Further analysis shows that the different positions of the minima in the different initial electronic states can be understood via the different interferences of the two phase-adiabatic states at the ionization times.
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Received: 09 May 2017
Revised: 12 June 2017
Accepted manuscript online:
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PACS:
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33.80.Rv
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(Multiphoton ionization and excitation to highly excited states (e.g., Rydberg states))
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42.65.Re
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(Ultrafast processes; optical pulse generation and pulse compression)
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42.25.Hz
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(Interference)
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Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11404204) and the Program for the Top Young Academic Leaders of Higher Learning Institutions of Shanxi Province, China. |
Corresponding Authors:
Xiang-Yang Miao
E-mail: sxxymiao@126.com
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Cite this article:
Hui-Fang Cui(崔会芳), Xiang-Yang Miao(苗向阳) Influence of the initial electronic state on minima of high-order harmonic spectrum radiated from hydrogen molecular ion 2017 Chin. Phys. B 26 103302
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