Effect of electron correlation on high-order harmonic generation in helium model atom

High-order harmonic generation （HHG） of a helium model atom in an intense laser field has been numerically investigated. The influence of electron correlation on HHG is analysed by changing the strength between the electrons. The numerical results show that as the electron interaction strength becom...

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Bibliographic Details
Published inChinese physics B Vol. 22; no. 1; pp. 171 - 174
Main Author 胡师林 史庭云
Format Journal Article
LanguageEnglish
Published 2013
Subjects
Conversion
Correlation
Harmonic generations
Harmonics
Helium
Ionization
Lasers
Mathematical models
Strength
强激光场
数值模拟模型
氦原子
电子相关
相互作用强度
第一电离能
计算结果
高次谐波产生
Online AccessGet full text
ISSN1674-1056
2058-3834
1741-4199
DOI10.1088/1674-1056/22/1/013101

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Summary:High-order harmonic generation （HHG） of a helium model atom in an intense laser field has been numerically investigated. The influence of electron correlation on HHG is analysed by changing the strength between the electrons. The numerical results show that as the electron interaction strength becomes small, the first ionization energy increases rapidly, which results in the decrease in ionization. So the conversion efficiency of the high harmonic lying in the plateau decreases greatly, while the cutoff harmonic order in the harmonic spectrum increases.
Bibliography:electron correlation, high-order harmonic generation, B-spline
High-order harmonic generation （HHG） of a helium model atom in an intense laser field has been numerically investigated. The influence of electron correlation on HHG is analysed by changing the strength between the electrons. The numerical results show that as the electron interaction strength becomes small, the first ionization energy increases rapidly, which results in the decrease in ionization. So the conversion efficiency of the high harmonic lying in the plateau decreases greatly, while the cutoff harmonic order in the harmonic spectrum increases.
11-5639/O4
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/22/1/013101