Attosecond-resolution two-electron harmonic emission

被引：1

作者：

Feng, Liqiang ^{[1
,2
]}

Li, Wenliang ^{[2
]}

Yuan, Minghu ^{[2
]}

Duan, Yunbo ^{[3
]}

Chu, Tianshu ^{[2
,3
]}

机构：

[1] Liaoning Univ Technol, Coll Sci, Jinzhou 121000, Peoples R China

[2] Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China

[3] Qingdao Univ, Inst Computat Sci & Engn, Lab New Fiber Mat & Modern Text, Growing Base State Key Lab, Qingdao 266071, Peoples R China

来源：

PHYSICS LETTERS A | 2015年 / 379卷 / 09期

关键词：

High-order harmonic generation; Two-electron effect; Double recombination; Intense laser field; IONIZATION; FIELD; GENERATION;

D O I：

10.1016/j.physleta.2014.05.035

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Two-electron harmonic emission from the He atom has been investigated by solving the two-electron time-dependent Schrodinger equation (TDSE), which exhibits an extended plateau and many new harmonic cutoffs beyond the classical single-electron harmonic cutoff. Theoretical analyses show that these extended new cutoffs are caused by the sequential double recombination and the nonsequential double recombination of the two electrons, which is a general characteristic for the two-electron harmonic emission and which is revealed through the investigation on laser parameter effects. Moreover, from analyzing the time-dependent wave functions, the motions of the two electrons and the single and double ionization time have been described. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：805 / 809

页数：5

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