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Investigating tunneling process of atom exposed in circularly polarized strong-laser field
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
2017-03-14
DOI10.1088/1361-6455/aa5991
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
关键词[WOS]ATTOSECOND ANGULAR STREAKING ; ABOVE-THRESHOLD-IONIZATION ; TRAVERSAL-TIME ; DELAY-TIME ; BARRIER ; ENHANCEMENT ; WAVE
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.
语种英语
WOS记录号WOS:000411269400003
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文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/150043
专题中国科学院大连化学物理研究所
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
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GB/T 7714
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).
APA Yuan, MingHu,Xin, PeiPei,Chu, TianShu,&Liu, HongPing.(2017).Investigating tunneling process of atom exposed in circularly polarized strong-laser field.JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS,50(5).
MLA Yuan, MingHu,et al."Investigating tunneling process of atom exposed in circularly polarized strong-laser field".JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS 50.5(2017).
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