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题名: Molecular high-order harmonic spectra and its application to the generation of the isolated attosecond pulse
作者: Feng, Li-Qiang1, 2;  Liu, Hang3;  Li, Wenliang4;  Castle, Rich-Samuel1
关键词: Attosecond pulse ;  Half-cycle pulse ;  Internuclear distance R ;  Molecular high-order harmonic spectra ;  Spatial inhomogeneous effect
刊名: JOURNAL OF MOLECULAR MODELING
发表日期: 2016-12-01
DOI: 10.1007/s00894-016-3162-2
卷: 22, 期:12
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Life Sciences & Biomedicine ;  Physical Sciences ;  Technology
类目[WOS]: Biochemistry & Molecular Biology ;  Biophysics ;  Chemistry, Multidisciplinary ;  Computer Science, Interdisciplinary Applications
研究领域[WOS]: Biochemistry & Molecular Biology ;  Biophysics ;  Chemistry ;  Computer Science
英文摘要: Molecular high-order harmonic generation (HHG) spectra from H-2(+) and its application to the generation of the isolated attosecond pulses (IAPs) have been numerically investigated. Results show that (i) the 7th harmonic order is enhanced with the nuclei around the equilibrium internuclear, and as the internuclear distance increased, this enhanced harmonic produces a red-shift (even disappearance). Theoretical analyses show that the electronic transition between the ground and the 1st excited states is responsible for the red-shift enhanced harmonic. (ii) The harmonic spectra exhibit several maxima and minima, and a red-shift of these points is predicted as the internuclear distance increased. (iii) By properly choosing the internuclear distance, the harmonic yield is enhanced, and there is only the single quantum path contributing to the harmonic spectra. (iv) Further, by properly adding the half-cycle pulse as well as the spatial inhomogeneous effect, a 375 eV supercontinuum with a pulse enhancement of 3.9 dB and some attosecond X-ray pulses shorter than 60as can be produced.
关键词[WOS]: BROAD-BAND SUPERCONTINUUM ;  FIELD ENHANCEMENT ;  NONLINEAR OPTICS ;  UNIPOLAR PULSE ;  DRIVEN ;  GASES
语种: 英语
WOS记录号: WOS:000390004800006
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/151842
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, State Key Lab Mol React Dynam, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
3.Liaoning Univ Technol, Sch Chem & Environm Engn, Jinzhou 121000, Peoples R China
4.Xinjiang Inst Engn, Educ Dept Xinjiang Uygur Autonomous Reg New Energ, Key Lab Univ, Urumqi 830091, Peoples R China

Recommended Citation:
Feng, Li-Qiang,Liu, Hang,Li, Wenliang,et al. Molecular high-order harmonic spectra and its application to the generation of the isolated attosecond pulse[J]. JOURNAL OF MOLECULAR MODELING,2016,22(12).
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