Elliptical High-Order Harmonic Generation from H2 + in Linearly Polarized Laser Fields
ZHANG Bin, ZHAO Zeng-Xiu**
Department of Physics, National University of Defense Technology, Changsha 410073
Abstract ：We investigate the elliptical high-order harmonic generation (HHG) from the ground state of H2 + subjected to linearly polarized laser fields, by numerically solving the three-dimensional (3D) time-dependent Schr?dinger equation (TDSE) and using the strong-field approximation (SFA) models. Highly elliptical HHG is yielded at intermedial alignment angles from the TDSE, while the standard SFA model fails to predict this. By including the coulomb potential and the stark shift corrections, we yield qualitative agreement results with the TDSE. The comparisons show that in the description of elliptical HHG, both the coulomb potential and the stark-shift are necessary.
收稿日期: 2012-11-21
出版日期: 2013-03-02
:
32.80.Rm
(Multiphoton ionization and excitation to highly excited states)
42.50.Hz
(Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift)
42.65.Ky
(Frequency conversion; harmonic generation, including higher-order harmonic generation)
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2013, Vol. 30 
