Controlling multiple returnings in non-sequential double ionization with orthogonal two-color laser pulses

Frontiers in Physics

Physics

Xiaomeng Ma¹  Aihong Tong¹  Xiaofan Zhang² 

[1] Hubei University of Education, Wuhan, China;Institute of Optoelectronic Materials and Components, Hubei University of Education, Wuhan, China;Wuhan Institute of Technology, Wuhan, China;

关键词: non-sequential double ionization;    orthogonal two-color laser pulse;    multiple returnings;    electronic correlation;    electron dynamics;   

DOI  :  10.3389/fphy.2023.1177359

 received in 2023-03-01, accepted in 2023-05-10,  发布年份 2023

来源: Frontiers

【 摘 要 】

With the three-dimensional semi-classical ensemble model, we studied the non-sequential double ionization by orthogonal two-color laser pulses. Our calculations show that the proportion of events experiencing multiple returnings, the sum of the final energies of two electrons, and the ion momentum distribution depend on the relative phase of the two-color fields, exhibiting oscillatory behavior with a period of π. Back analysis of these trajectories reveals that we can control the recollision energy of the electron by changing the relative phase of the two-color laser pulse. As a consequence, the trajectories of multiple-returning ions change with the relative phase, resulting in relative-phase-dependent ion momentum distributions. The result shows that the momentum distribution of the ions in the trajectories of multiple returnings is clearly wider than that for the case of single returning. For the multiple-returning events, the binary recollision leads to a smaller scattering angle of the first electron.

【 授权许可】

Unknown   
Copyright © 2023 Ma, Zhang and Tong.