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题名: Laser phase effect on asymmetric harmonic distribution in H-2(+)
作者: Feng, Li-Qiang1, 2;  Li, Wen-Liang1, 2, 3;  Liu, Hui1
关键词: molecular high-order harmonic generation ;  spatial distribution of molecular harmonics ;  laser phase effect ;  isotope effect
刊名: CHINESE PHYSICS B
发表日期: 2017-04-01
DOI: 10.1088/1674-1056/26/4/044206
卷: 26, 期:4
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Physics, Multidisciplinary
研究领域[WOS]: Physics
英文摘要: The laser phase effect on the spatial distribution of the molecular high-order harmonic generation (MHHG) spectrum from H-2(+) is theoretically investigated through solving the Non-Bohn-Oppenheimer (NBO) time-dependent Schrodinger equation (TDSE). The results are shown as follows. (i) The generated harmonics from the two nuclei each present an asymmetric distribution. Particularly, when the laser phases are chosen from 0.0 pi to 0.6 pi and from 1.7 pi to 2.0 pi, the contribution from the negative-H plays a main role in harmonic generation. When the laser phases are chosen from 0.7 pi to 1.6 pi, the contribution from the positive-H to the harmonic generation is remarkably enhanced and becomes greater than that from the negative-H. The electron localization, the time-frequency analyses of the harmonic spectrum and the time-dependent wave function are shown to explain the asymmetric harmonic distribution in H-2(+) , which provides us with a method to control the electron motion in molecules. (ii) As the pulse duration increases, the asymmetric distributions of the MHHG in two H nuclei decrease. (iii) Isotope investigation shows that the asymmetric harmonic distribution can be reduced by introducing the heavy nucleus (i.e., D-2(+)).
关键词[WOS]: IONIZATION ;  FIELD
语种: 英语
WOS记录号: WOS:000400906300006
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/152008
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Liaoning Univ Technol, Coll Sci, Jinzhou 121000, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
3.Xinjiang Inst Engn, Key Lab, Univ Educ Dept Xinjiang Uygur Autonomous Reg New, Urumqi 830091, Peoples R China

Recommended Citation:
Feng, Li-Qiang,Li, Wen-Liang,Liu, Hui. Laser phase effect on asymmetric harmonic distribution in H-2(+)[J]. CHINESE PHYSICS B,2017,26(4).
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