Polarization effects in above-threshold ionization of Mg with a mid-infrared strong laser field

30th International Conference on Photonic, Electronic, and Atomic Collisions

Kang, Huipeng^1,4 ; Xu, Song Po^1,2 ; Wang, Yan Lan^1,2 ; Lai, Xuan Yang^1 ; Pfeifer, Thomas^3 ; Liu, Xiao Jun^1 ; Chen, Jing^5 ; Cheng, Ya^6 ; Xu, Zhi Zhan^6

State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan

430071, China^1

University of Chinese Academy of Sciences, Beijing

100049, China^2

Max-Planck-Institut für Kernphysik, Heidelberg

69117, Germany^3

Institut für Kernphysik, Goethe Universität Frankfurt, Frankfurt am Main

60438, Germany^4

HEDPS, Center for Applied Physics and Technology, Peking University, China and Institute of Applied Physics and Computational Mathematics, P. O. Box 8009, Beijing

100084, China^5

State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, P. O. Box 800-211, Shanghai

201800, China^6

关键词: Above-threshold ionization;    Electron trajectories;    Low energy structures;    Mid-infrared laser pulse;    Polarization effect;    Semiclassical approaches;    Strong laser field;    Time distribution;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/875/3/022023/pdf
DOI  :  10.1088/1742-6596/875/3/022023

来源: IOP

【 摘 要 】

Synopsis Using a semiclassical approach, we find an enhancement of low-energy structure in above-threshold ionization spectra of Magnesium by intense, mid-infrared laser pulses. By performing electron trajectory and recollision-time distribution analysis, we demonstrate this enhancement results from a focusing of electrons by laser induced dynamical polarization.