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Intensity distributions and isolated attosecond pulse generation from molecular high-order harmonic generation in H-2(+) driven by nonhomogeneous field
Feng, Liqiang1,2; Chu, Tianshu2,3
刊名PHYSICS OF PLASMAS
2017-10-01
DOI10.1063/1.5001720
24期:10
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Physics, Fluids & Plasmas
研究领域[WOS]Physics
关键词[WOS]LASER FIELDS ; CHIRP CONTROL ; IONIZATION ; ENHANCEMENT ; EMISSION ; UNIPOLAR
英文摘要Intensity distributions and isolated attosecond pulse generation from the molecular high-order harmonic generation (MHHG) in H-2(+) and T-2(+) driven by the nonhomogeneous field have been theoretically investigated. (i) Generally speaking, the intensities of the harmonics driven by the homogeneous field can be enhanced as the initial vibrational state increases and much more intense harmonics can be obtained from the light nuclei. However, with the introduction of the nonhomogeneous effect, the enhanced ratios of the harmonic yields are decreased as the initial vibrational state increases. Moreover, the intensities of the harmonics from H-2(+) and T-2(+) are very sensitive to the nonhomogeneous effect of the laser field. (ii) The contributions of the MHHG from the two-H nuclei present the periodic variation as a function of the laser phase for the case of the symmetric nonhomogeneous field. However, for the case of the positive and the negative asymmetric nonhomogeneous fields, the left-H and the right-H play the dominating role in the MHHG, respectively. Moreover, as the angle between the laser polarization direction and the molecular axis increases, the intensity differences of the harmonics from the two-H nuclei are increased. (iii) By properly adding a half-cycle pulse into the positive asymmetric nonhomogeneous field, a supercontinuum with the bandwidth of 279 eV and an isolated 25 as pulse can be obtained. Published by AIP Publishing.
语种英语
WOS记录号WOS:000414171600117
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/149700
专题中国科学院大连化学物理研究所
作者单位1.Liaoning Univ Technol, Coll Sci, Lab Modern Phys, Jinzhou 121001, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
3.Qingdao Univ, Growing Base State Key Lab, Lab New Fiber Mat & Modern Text, Inst Computat Sci & Engn, Qingdao 266071, Peoples R China
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Feng, Liqiang,Chu, Tianshu. Intensity distributions and isolated attosecond pulse generation from molecular high-order harmonic generation in H-2(+) driven by nonhomogeneous field[J]. PHYSICS OF PLASMAS,2017,24(10).
APA Feng, Liqiang,&Chu, Tianshu.(2017).Intensity distributions and isolated attosecond pulse generation from molecular high-order harmonic generation in H-2(+) driven by nonhomogeneous field.PHYSICS OF PLASMAS,24(10).
MLA Feng, Liqiang,et al."Intensity distributions and isolated attosecond pulse generation from molecular high-order harmonic generation in H-2(+) driven by nonhomogeneous field".PHYSICS OF PLASMAS 24.10(2017).
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