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学科主题: 物理化学
题名: Nuclear signatures on the molecular harmonic emission and the attosecond pulse generation
作者: Feng, Liqiang1;  Chu, Tianshu1, 2
通讯作者: 楚天舒
刊名: JOURNAL OF CHEMICAL PHYSICS
发表日期: 2012-02-07
DOI: 10.1063/1.3681165
卷: 136, 期:5, 页:541021
收录类别: SCI
文章类型: Article
部门归属: 11
项目归属: 1101
产权排名: 1,1
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Physics, Atomic, Molecular & Chemical
研究领域[WOS]: Physics
英文摘要: In this paper, we theoretically investigate the nuclear signatures effects, i.e., the initial vibrational state and the isotopic effects on the generations of the molecular high-order harmonics and the attosecond pulses when the model H-2(+)/D-2(+) ions are exposed to a 5 fs/800 nm chirp pulse. The numerical solution of the time-dependent Schrodinger equation for these vibrating molecule ions shows that the intensities of the harmonic spectra are reinforced with the enhancement of the initial vibrational state. Moreover, through the investigation of the isotopic effect, we find that more intense harmonics are generated in the lighter nucleus. Furthermore, by optimizing the chirp pulse under the optimal initial vibrational state, an intense ultrabroad supercontinuum with a 325 eV bandwidth can be obtained. By properly superposing the harmonic spectrum, an attosecond pulse as short as 57 as (16 as) is generated without (with) phase compensation. (C) 2012 American Institute of Physics. [doi:10.1063/1.3681165]
关键词[WOS]: INTENSE LASER FIELDS ;  IONS ;  DYNAMICS ;  ATOMS ;  MODEL ;  H-2+
语种: 英语
WOS记录号: WOS:000300547200002
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/118045
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.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
2.Qingdao Univ, Inst Computat Sci & Engn, Lab New Fiber Mat & Modern Text, Growing Base State Key Lab, Qingdao 266071, Peoples R China

Recommended Citation:
Feng, Liqiang,Chu, Tianshu. Nuclear signatures on the molecular harmonic emission and the attosecond pulse generation[J]. JOURNAL OF CHEMICAL PHYSICS,2012,136(5):541021.
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