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
收藏
页码：805 / 809
页数：5
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