中国物理B ›› 2020, Vol. 29 ›› Issue (7): 74203-074203.doi: 10.1088/1674-1056/ab8ac0
• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇 下一篇
Photoelectron momentum distributions of single-photon ionization under a pair of elliptically polarized attosecond laser pulses
Hui-Fang Cui(崔会芳), Xiang-Yang Miao(苗向阳)
- 1 College of Physics and Information Engineering, Shanxi Normal University, Linfen 041004, China;
2 Key Laboratory of Spectral Measurement and Analysis of Shanxi Province, Shanxi Normal University, Linfen 041004, China
Photoelectron momentum distributions of single-photon ionization under a pair of elliptically polarized attosecond laser pulses
Hui-Fang Cui(崔会芳)1,2, Xiang-Yang Miao(苗向阳)1,2
- 1 College of Physics and Information Engineering, Shanxi Normal University, Linfen 041004, China;
2 Key Laboratory of Spectral Measurement and Analysis of Shanxi Province, Shanxi Normal University, Linfen 041004, China
摘要： The attosecond ionization dynamics of atoms has attracted extensive attention in these days. However, the role of the initial state is not clearly understood. To address this question, we perform simulations on the neon atom and its model atom with different initial states by numerically solving the corresponding two-dimensional time-dependent Schrödinger equations. We theoretically investigate atomic photoelectron momentum distributions (PMDs) by a pair of elliptically polarized attosecond laser pulses. We find that the PMD is sensitive not only to the ellipticities of the pulses, the relative helicity, and time delay of the pulses, but also to the symmetry of the initial electronic states. Results are analyzed by the first-order time-dependent perturbation theory (TDPT) and offer a new tool for detecting the rotation direction of the ring currents.
中图分类号: (Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift)
- 42.50.Hz