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学科主题: 物理化学
题名: Generation of an isolated sub-40-as pulse using two-color laser pulses: Combined chirp effects
作者: Feng, Liqiang1;  Chu, Tianshu2
通讯作者: 楚天舒
刊名: PHYSICAL REVIEW A
发表日期: 2011-11-28
DOI: 10.1103/PhysRevA.84.053853
卷: 84, 期:5, 页:053853
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]: Optics ;  Physics, Atomic, Molecular & Chemical
摘要: Generation of an isolated sub-40-as pulse using two-color laser pulses: Combined chirp effects
研究领域[WOS]: Optics ;  Physics
英文摘要: In this paper, we theoretically discuss the combined chirp effects on the isolated attosecond generation when a model Ar is exposed to an intense 5-fs, 800-nm fundamental chirped pulse combined with a weak 10-fs, 1200-nm controlling chirped pulse. It shows that for the case of the chirp parameters beta(1) = 6.1 (corresponding to the 800-nm field) and beta(2) = 4.0 (corresponding to the 1200-nm field), both the harmonic cutoff energy and the supercontinuum can be remarkably extended resulting in a 663-eV bandwidth. Moreover, due to the introduction of the chirps, the short quantum path is selected to contribute to the harmonic spectrum. Finally, by superposing a properly selected harmonic spectrum in the supercontinuum region, an isolated pulse as short as 31 as (5 as) is generated without (with) phase compensation.
关键词[WOS]: ORDER HARMONIC-GENERATION ;  ATTOSECOND PULSE ;  FIELD ;  PHOTODISSOCIATION ;  DYNAMICS ;  PHYSICS ;  ATOMS
语种: 英语
WOS记录号: WOS:000297406500028
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/115623
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. Generation of an isolated sub-40-as pulse using two-color laser pulses: Combined chirp effects[J]. PHYSICAL REVIEW A,2011,84(5):053853.
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