Two-center interference in high-harmonic generation of H2+ in a combination of a mid-infrared laser field and a terahertz field

Two-center interference in high-harmonic generation of H2+ in a combination of a mid-infrared laser field and a terahertz field

We theoretically investigate the two-center interference in high-order harmonics generated from the H2+ in a combination of a mid-infrared laser and a terahertz field by numerically solving the time-dependent Schr ¨odinger equation（TDSE）.The interference minima in high-order harmonic generation（HHG）...

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Veröffentlicht in:中国物理B：英文版 2017 (1), p.180-185
1. Verfasser: 张军 潘雪飞 徐彤彤 张宏丹 杜慧 郭静 刘学深
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description We theoretically investigate the two-center interference in high-order harmonics generated from the H2+ in a combination of a mid-infrared laser and a terahertz field by numerically solving the time-dependent Schr ¨odinger equation（TDSE）.The interference minima in high-order harmonic generation（HHG） are effectively suppressed when a THz field is added.The contribution to HHG from the two separate nuclei is used to demonstrate the locating order of the harmonic minima.Furthermore, we also investigate the emission time of harmonics. The results show that the intensity of the short path around 60 thorder after adding a THz field is stronger than that in the mid-infrared laser field, which further illustrates the suppression of the interference minima in HHG.
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title Two-center interference in high-harmonic generation of H2+ in a combination of a mid-infrared laser field and a terahertz field
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