| The dependence of high-order harmonic generation on the laser frequency and inter-nuclear distance from multi-atom molecular ions |
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| 作者姓名： | 王玉峰 孙真荣 张向韵 萧珺 邓莉 张卫平 王祖赓 曾志男 |
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| 作者单位： | Key Laboratory of Optical and Magnetic Resonance Spectroscopy Department of Physics，East China Normal University，Shanghai 200062，Key Laboratory of Optical and Magnetic Resonance Spectroscopy，Department of Physics，East China Normal University，Shanghai 200062，Key Laboratory of Optical and Magnetic Resonance Spectroscopy，Department of Physics，East China Normal University，Shanghai 200062，Key Laboratory of Optical and Magnetic Resonance Spectroscopy，Department of Physics，East China Normal University，Shanghai 200062，Key Laboratory of Optical and Magnetic Resonance Spectroscopy，Department of Physics，East China Normal University，Shanghai 200062，Key Laboratory of Optical and Magnetic Resonance Spectroscopy，Department of Physics，East China Normal University，Shanghai 200062，Key Laboratory of Optical and Magnetic Resonance Spectroscopy，Department of Physics，East China Normal University，Shanghai 200062，State Key Laboratory of High Field Laser Physics，Shanghai Institute of Optics and Fine Mechanics，Chinese Academy of Sciences，Shanghai 201800 |
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| 基金项目： | This work was supported by the Shanghai Priority Academic Discipline, the National Natural Science Foundation of China (No. 10234030 and 10374030)
the National Key Project for Basic Research of China (No.1999075204)
the Key Project sponsored by Shanghai Science and Technology Committee (No. 036105019and 03DJ14001)
the Twilight Project sponsored by Shanghai Education Committee (No. 03SG23) |
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| 摘 要： | High-order harmonic generation from one-dimensional (1D) multi-atom molecular ions in an ultra-short laser field is theoretically investigated. The dynamics of the electron in a linearly polarized intense laser field is analyzed in terms of 1D Schrodinger equation with the Crank-Nicolson algorithm. The dependence of high-order harmonics on the laser frequency and the inter-nuclear distance is discussed. It is found that the optimum range of inter-nuclear distance should be changed to get extended harmonic generation for different laser frequency, and the lower frequency laser pulse is favorable to higher order harmonic generation as the inter-nuclear distance increases.
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