Theoretical investigation of the electron dynamics in high-order harmonic generation process from the doped periodic potential

被引：7

作者：

Ma, Junlin

Zhang, Caiping ^{[1
]}

Cui, Huifang

Ma, Zehui

Miao, Xiangyang ^{[1
]}

机构：

[1] Shanxi Normal Univ, Coll Phys & Informat Engn, Linfen 041000, Shanxi, Peoples R China

来源：

CHEMICAL PHYSICS LETTERS | 2020年 / 744卷

基金：

中国国家自然科学基金;

关键词：

High-order harmonic genenration; Electron dynamics; Ultrafast process; Doped periodic potential; MOLECULE;

D O I：

10.1016/j.cplett.2020.137207

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The electron dynamics in the harmonic emission process from the doped periodic potential have been investigated by numerically solving the time-dependent Schrodinger equation. The results show that the harmonic efficiency of the second plateau can be enhanced almost six orders of magnitude for the doped potential. Moreover, the corresponding doping rate dependence changes from enhanced to suppressed rather than a linear tendency. It can be ascribed to two excitation channels, i.e. the direct excitation channel and the step-by-step excitation channel. By means of the time-dependent electron imaging picture, time-frequency maps and the energy-band structure, the underlying physical mechanism is revealed.

引用

页数：4

共 40 条

[1] MOTION OF AN ELECTRON IN A PERTURBED PERIODIC POTENTIAL [J].