Interference between one-photon and resonant two-photon ionization by intense pulses of a bichromatic VUV field

29th International Conference on Photonic, Electronic, and Atomic Collisions

Grum-Grzhimailo, A.N.^1 ; Gryzlova, E.V.^1 ; Staroselskaya, E.I.^2 ; Venzke, J.^3 ; Bartschat, K.^3

Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow

119991, Russia^1

Faculty of Physics, Lomonosov Moscow State University, Moscow

119991, Russia^2

Department of Physics and Astronomy, Drake University, Des Moines

IA

50311, United States^3

关键词: Atomic ionization;    Intermediate state;    Ionization pathways;    Photoelectron angular distributions;    Photon energy;    Second harmonics;    Short intense pulse;    Two photon ionization;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/635/9/092020/pdf
DOI  :  10.1088/1742-6596/635/9/092020

来源: IOP

【 摘 要 】

Photoelectron angular distributions are theoretically described for coherent atomic ionization by short intense pulses of VUV radiation, containing both first and second harmonics, when the energy of the fundamental is in resonance with an intermediate state. The interference between different ionization pathways results in a 'left-right' asymmetry, which exhibits resonance profiles as function of the photon energy.