Off-axis low-energy structures in above-threshold ionization

被引:69
作者
Moeller, M. [1 ,2 ]
Meyer, F. [2 ]
Sayler, A. M. [1 ,2 ]
Paulus, G. G. [1 ,2 ]
Kling, M. F. [3 ]
Schmidt, B. E. [4 ]
Becker, W. [5 ]
Milosevic, D. B. [5 ,6 ,7 ]
机构
[1] Helmholtz Inst Jena, D-07743 Jena, Germany
[2] Univ Jena, Abbe Ctr Photon, Inst Opt & Quantum Elect, D-07743 Jena, Germany
[3] Max Planck Inst Quantum Opt, D-85748 Garching, Germany
[4] Ctr Energie Mat & Telecommun, Inst Natl Rech Sci, Varennes, PQ J3X 1S2, Canada
[5] Max Born Inst, D-12489 Berlin, Germany
[6] Univ Sarajevo, Fac Sci, Sarajevo 71000, Bosnia & Herceg
[7] Acad Sci & Arts Bosnia & Herzegovina, Sarajevo 71000, Bosnia & Herceg
来源
PHYSICAL REVIEW A | 2014年 / 90卷 / 02期
关键词
ULTRASHORT LASER-PULSES; FIELD; RESCATTERING; DYNAMICS; INTENSE; ATOMS; TIME;
D O I
10.1103/PhysRevA.90.023412
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The velocity map of the above-threshold ionization electron spectrum at long laser wavelength exhibits a characteristic structure normal to the laser polarization, which has the appearance of a trident or a three-pronged fork. The forklike structure vanishes for few-cycle laser pulses. It is explained in terms of the classical-electron-trajectories model of strong-field ionization augmented so as to allow for rescattering. The analysis reveals its relation to the so-called low-energy structure, which was recently observed for very small transverse momenta.
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页数:5
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