Atomic high-order harmonic generation from a circularly polarized laser pulse

被引：3
|
作者：
Guo Fu-Ming [1 ]
Chen Gao [2 ]
Chen Ji-Gen [3 ]
Li Su-Yu [1 ]
Yang Yu-Jun [1 ]
机构：
[1] Jilin Univ, Inst Atom & Mol Phys, Changchun 130012, Peoples R China
[2] Changchun Univ Sci & Technol, Sch Sci, Changchun 130022, Peoples R China
[3] Taizhou Univ, Dept Phys & Mat Engn, Taizhou 318000, Peoples R China
来源：
CHINESE PHYSICS B | 2013年 / 22卷 / 02期
基金：
中国国家自然科学基金;
关键词：
high-order harmonic generation; circularly polarized intense laser; ATTOSECOND; PHYSICS;
D O I：
10.1088/1674-1056/22/2/023204
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We demonstrate theoretically that the high-order harmonic of an atom can be generated by a circularly polarized laser pulse. The harmonic spectrum shows a clear cutoff with an energy I-p + 2U(p). In particular, the high-order harmonic generation comes from the multiple recombination of the ionized electron with non-zero initial velocity. These results are verified by the classical model theory and the time-frequency analysis of a harmonic spectrum.
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页数：5
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