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题名: Investigating tunneling process of atom exposed in circularly polarized strong-laser field
作者: Yuan, MingHu1;  Xin, PeiPei1;  Chu, TianShu2, 3;  Liu, HongPing1
关键词: time-dependent Schrodinger equation ;  tunneling time ;  instantaneous ionization rate
刊名: JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
发表日期: 2017-03-14
DOI: 10.1088/1361-6455/aa5991
卷: 50, 期:5
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 propose a method for studying the tunneling process by analyzing the instantaneous ionization rate of a circularly polarized laser. A numerical calculation shows that, for an atom exposed to a long laser pulse, if its initial electronic state wave function is non-spherical symmetric, the delayed phase shift of the ionization rate vs the laser cycle period in real time in the region close to the peak intensity of the laser pulse can be used to probe the tunneling time. In this region, an obvious time delay phase shift of more than 190 attoseconds is observed. Further study shows that the atom has a longer tunneling time in the ionization under a shorter wavelength laser pulse. In our method, a Wigner rotation technique is employed to numerically solve the time-dependent Schrodinger equation of a single-active electron in a three-dimensional spherical coordinate system.
关键词[WOS]: ATTOSECOND ANGULAR STREAKING ;  ABOVE-THRESHOLD-IONIZATION ;  TRAVERSAL-TIME ;  DELAY-TIME ;  BARRIER ;  ENHANCEMENT ;  WAVE
语种: 英语
WOS记录号: WOS:000411269400003
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/150043
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, Wuhan Inst Phys & Math, State Key Lab Magnet Resonances & Atom & Mol Phys, Wuhan 430071, Hubei, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
3.Qingdao Univ, Coll Chem Sci & Engn, Growing Base State Key Lab & Coll Phys, Lab New Fiber Mat & Modern Text,Inst Computat Sci, Qingdao 266071, Peoples R China

Recommended Citation:
Yuan, MingHu,Xin, PeiPei,Chu, TianShu,et al. Investigating tunneling process of atom exposed in circularly polarized strong-laser field[J]. JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS,2017,50(5).
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