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题名: Spatial position scaling on harmonic generation from He atom in bowtie-shaped nanostructure
作者: Liu, Hang1, 2;  Feng, Liqiang3, 4;  Li, Wenliang3, 4;  Li, Yi2
关键词: High-order harmonic generation ;  Nonhomogeneous laser field ;  Bowtie-shaped nanostructure ;  Spatial position of He atom ;  Single attosecond pulse
刊名: OPTICS COMMUNICATIONS
发表日期: 2017-09-01
DOI: 10.1016/j.optcom.2017.04.031
卷: 398, 页:31-38
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Optics
研究领域[WOS]: Optics
英文摘要: Spatial position scaling on the harmonic generation from He in the bowtie-shaped nanostructure has been theoretically investigated. It shows that (i) due to the surface plasmon polaritons in the nanostructure, the laser intensity can be enhanced and presents the nonhomogeneous effect in space. As a result, the extension of the harmonic cutoff can be achieved when He is away from the gap center of the nanostructure. However, due to the limit of the gap size, there is a maximum harmonic cutoff extension for a given nanostructure. (ii) Due to the asymmetric enhancement of the laser intensity in space, the extended harmonics are mainly from E(t) > 0 a.u. and E(t) < 0 a.u. when He is injected into the positive and the negative positions, respectively. Moreover, the intensities and the cutoffs of the extended harmonics can be controlled by changing the pulse duration or by adding the second controlling pulse. Finally, by properly superposing the harmonics from the two-color field, four single attosecond pulses with the durations of 30 as can be produced.
关键词[WOS]: ISOLATED-ATTOSECOND PULSE ;  FIELD ;  ENHANCEMENT
语种: 英语
WOS记录号: WOS:000401391200005
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/152289
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, Sch Chem & Environm Engn, Lab Mol React Dynam, Jinzhou 121001, Peoples R China
2.Liaoning Univ Technol, Lab Modern Phys, Jinzhou 121001, Peoples R China
3.Chinese Acad Sci, State Key Lab Mol React Dynam, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
4.Xinjiang Inst Engn, Key Lab Univ, Educ Dept Xinjiang Uygur Autonomous Reg New Energ, Urumqi 830091, Peoples R China

Recommended Citation:
Liu, Hang,Feng, Liqiang,Li, Wenliang,et al. Spatial position scaling on harmonic generation from He atom in bowtie-shaped nanostructure[J]. OPTICS COMMUNICATIONS,2017,398:31-38.
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