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题名: Reexamination of wavelength scaling of harmonic yield in intense midinfrared fields
作者: Wang, Yunhui1;  Yu, Chao1;  Shi, Qi1;  Zhang, Yadong1;  Cao, Xu1;  Jiang, Shicheng1;  Lu, Ruifeng1, 2
刊名: PHYSICAL REVIEW A
发表日期: 2014-02-18
DOI: 10.1103/PhysRevA.89.023825
卷: 89, 期:2
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: We theoretically investigate harmonic generation driven by intense midinfrared lasers. A valleylike structure is observed at very low-order harmonics because of a low-energy photoelectron suppression effect. Further, at the beginning of a broad supercontinuum, a convex structure appears that is distributed from the tail in a very narrow energy band in time-frequency maps. Surprisingly, our quantum dynamics calculations demonstrate the beneficial wavelength scaling of the harmonic yield to be lambda(4.6) for He and lambda(5.1) for Ne over selected energy windows. The bandwidth of the harmonic plateau with only a single quantum trajectory contribution can be further extended by adding a controlling laser field, and the harmonic efficiency is found to be significantly enhanced after macroscopic propagation. In addition, ultrashort isolated attosecond pulses can be obtained by properly superposing the harmonics in the plateaus of both the He and Ne systems.
关键词[WOS]: ATTOSECOND PULSE ;  2-COLOR FIELD ;  CYCLE PULSES ;  MU-M ;  GENERATION ;  ATOMS ;  REGIME ;  IONS
语种: 英语
WOS记录号: WOS:000332329800026
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/145423
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:
Wang, Yunhui,Yu, Chao,Shi, Qi,et al. Reexamination of wavelength scaling of harmonic yield in intense midinfrared fields[J]. PHYSICAL REVIEW A,2014,89(2).
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