基于强激光场调控的关联电子动力学操控研究

项目名称： 基于强激光场调控的关联电子动力学操控研究

项目编号： No.61575169

项目类型： 面上项目

立项/批准年度： 2016

项目学科： 无线电电子学、电信技术

项目作者： 汤清彬

作者单位： 信阳师范学院

项目金额： 16万元

中文摘要： 强激光场原子分子非次序双电离中的电子对表现出很强的关联效应，因而强场双电离研究对人们进一步认识强场物理过程，深入了解微观世界中阿秒时间尺度的电子关联动力学的物理本质有重要意义。最新的研究结果显示，强场双电离发射电子信号携带丰富的靶核结构信息，通过裁剪激光场，对双电离电子信号进行分析和调控，不但有望实现对关联电子动力学的操控，还能够实现对靶核结构的探测。因此，本项目拟选用具有代表性的原子和双原子分子为研究对象，利用数值求解含时薛定谔方程量子理论方法，开展强场原子分子双电离过程中电子关联动力学研究。首先研究靶核结构对电子对关联动力学的影响，分析不同靶核双电离过程中电子关联特性的差异。随后探索激光脉宽、强度、波长和载波包络相位等可控激光参数对关联电子动力学细节的影响，并评估不同电离通道对双电离产率的贡献及其物理本质。最后通过调控电离时间相位和回复电子波包，实现对关联电子超快动力学的精确操控。

中文关键词： 强激光场；非次序双电离；电子关联；多电子动力学；

英文摘要： Double ionization (DI) of atoms and molecules is one of the most interesting phenomena in strong-field physics as it involves the correlated motion of two electrons. Detailed understanding of the correlated electron dynamics driven by the strong laser field is essential to extend people’s knowledge on laser-matter interaction and the concepts of attosecond physics to many-body microscopic systems. The recent research has demonstrated that, the emitted electronic signal carries abundant structural information about the structure of the target. Therefore, the ultrafast dynamics control of correlated electrons from DI and the structural detection of the target can be achieved by analyzing and manipulative electron dynamics. In this project, we choose the typical and relatively stable atoms of inert gases and diatomic molecules as the target, and investigate the correlated electron dynamics in strong-field DI of atoms and molecules by solving the time-dependent Schr？dinger equation. Firstly, we investigate the atto-second collision dynamics of correlated electrons from strong-field DI of the atoms and the homonuclear and heteronuclear diatomic molecules，analyze the difference of the atto-second collision dynamics of correlated electron from DI for different target structures. Then we explore the influences of the la

英文关键词： Strong laser field；Nonsequential double ionization；Electron correlation；multielectron dynamics；