Elliptically polarized high-order harmonic generation of Ar atom in an intense laser field

被引：0

作者：

Hu, Jie ^{[1
]}

Wang, Yi-Chen ^{[1
]}

Jing, Qiu-Shuang ^{[1
]}

Jiang, Wei ^{[1
]}

Wang, Ge-Wen ^{[1
]}

Zhao, Yi-Wen ^{[1
]}

Xiao, Bo ^{[1
]}

Liang, Hong-Jing ^{[2
]}

Ma, Ri ^{[1
]}

机构：

[1] Jilin Univ, Inst Atom & Mol Phys, Changchun 130012, Peoples R China

[2] Jilin Inst Chem Technol, Coll Sci, Jilin 132022, Peoples R China

来源：

CHINESE PHYSICS B | 2024年 / 33卷 / 05期

基金：

中国国家自然科学基金;

关键词：

high-order harmonic generation; Coulomb effect; elliptically polarized intense laser field; 42.65.Ky; 33.20.Xx; 33.80.-b; IONIZATION; DEPENDENCE; DYNAMICS;

D O I：

10.1088/1674-1056/ad2604

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

High-order harmonic generation (HHG) of Ar atom in an elliptically polarized intense laser field is experimentally investigated in this work. Interestingly, the anomalous ellipticity dependence on the laser ellipticity (epsilon) in the lower-order harmonics is observed, specifically in the 13rd-order, which displays a maximal harmonic intensity at epsilon approximate to 0.1, rather than at epsilon = 0 as expected. This contradicts the general trend of harmonic yield, which typically decreases with the increase of laser ellipticity. In this study, we attribute this phenomenon to the disruption of the symmetry of the wave function by the Coulomb effect, leading to the generation of a harmonic with high ellipticity. This finding provides valuable insights into the behavior of elliptically polarized harmonics and opens up a potential way for exploring new applications in ultrafast spectroscopy and light-matter interactions.

引用

页数：5

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