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题名: Isolated few-attosecond emission in a multi-cycle asymmetrically nonhomogeneous two-color laser field
作者: Yu, Chao1;  Wang, Yunhui1;  Cao, Xu1;  Jiang, Shicheng1;  Lu, Ruifeng1, 2
关键词: high-order harmonic generation ;  plasmon-enhanced nonhomogeneous laser field ;  attosecond
刊名: JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
发表日期: 2014-11-28
DOI: 10.1088/0953-4075/47/22/225602
卷: 47, 期:22
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Optics ;  Physics, Atomic, Molecular & Chemical
研究领域[WOS]: Optics ;  Physics
英文摘要: By solving the three-dimensional time-dependent Schrodinger equation, we present a theoretical investigation of helium-based high-order harmonic generation (HHG) in both symmetric and asymmetric spatially nonhomogeneous laser fields. It is determined that the harmonic cutoff is extended in both symmetric and asymmetric nonhomogeneous laser fields, and the spatial symmetry of the nonhomogeneous field greatly influences the movement of electronic wave packets, which subsequently affect harmonic emission. In particular, the spatially asymmetric distribution of the laser field will induce asymmetric recombination of electronic wave packets between the two sides of a helium atom, which could reduce the interference in HHG emission for every optical cycle. In combination with the two-color technique, multi-cycle laser pulses with asymmetric spatially nonhomogeneous characteristics are capable of generating a coherent extreme ultraviolet supercontinuum, which can be used to produce isolated few-attosecond pulses.
关键词[WOS]: HIGH-HARMONIC-GENERATION ;  PULSE GENERATION ;  ENHANCEMENT ;  NANOSTRUCTURES ;  IONIZATION ;  PLATEAU ;  MOTION
语种: 英语
WOS记录号: WOS:000344499200027
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/145852
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.Nanjing Univ Sci & Technol, Dept Appl Phys, Nanjing 210094, Jiangsu, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China

Recommended Citation:
Yu, Chao,Wang, Yunhui,Cao, Xu,et al. Isolated few-attosecond emission in a multi-cycle asymmetrically nonhomogeneous two-color laser field[J]. JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS,2014,47(22).
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