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学科主题: 物理化学
题名: Intensity improvement in the attosecond pulse generation with the coherent superposition initial state
作者: Feng, Liqiang1;  Chu, Tianshu1, 2
通讯作者: 楚天舒
关键词: Coherent superposition initial state ;  High-order harmonic generation ;  Isolated attosecond pulse
刊名: PHYSICS LETTERS A
发表日期: 2012-03-26
DOI: 10.1016/j.physleta.2012.03.031
卷: 376, 期:17, 页:1523-1530
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, Multidisciplinary
研究领域[WOS]: Physics
英文摘要: We investigate the coherent superposition initial state effect and found that when the initial active electron state is prepared in the coherent superposition of the is and 2s states of the He+ ion and the chirp parameter of the fundamental field in the two-color scheme is chosen to be beta = 0.3, the harmonic cutoff energy is remarkably extended and the harmonic yield is enhanced by at least 6 orders of magnitude compared with the case of the single 1s ground state with chirp-free pulse. An ultrabroad supercontinuum with a 458 eV bandwidth is formed, directly producing an intense isolated 34 as pulse. (c) 2012 Elsevier B.V. All rights reserved.
关键词[WOS]: ORDER HARMONIC-GENERATION ;  MULTIPHOTON IONIZATION ;  WAVE-PACKET ;  ATOMS ;  QUANTUM ;  REGIME ;  FIELD
语种: 英语
WOS记录号: WOS:000302983700023
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/117958
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. Intensity improvement in the attosecond pulse generation with the coherent superposition initial state[J]. PHYSICS LETTERS A,2012,376(17):1523-1530.
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