Attosecond pulse generation from two-electron harmonic emission spectrum

被引：5
作者：
Feng Li-Qiang [1 ,2 ]
Liu Hang [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] Liaoning Univ Technol, Sch Chem & Environm Engn, Jinzhou 121000, Peoples R China
来源：
CHINESE PHYSICS B | 2015年 / 24卷 / 03期
关键词：
high-order harmonic generation; attosecond extreme ultraviolet pulse; two-electron model; LASER FIELDS;
D O I：
10.1088/1674-1056/24/3/034206
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
In this paper, we theoretically investigate the high-order harmonic generation and attosecond pulse generation when a two-electron He atom is exposed to the intense laser pulse. It shows that due to the two-electron double recombination mechanism, an extended plateau beyond the classical single-electron harmonic has been obtained on the two-electron harmonic spectrum. Further by using this two-electron harmonic extension scheme combined with the two-color field, two supercontinuum bandwidths with 200 eV have been obtained. As a result, a series of sub-60 as extreme ultraviolet (XUV) pulses have been directly generated.
引用
收藏
页数：5
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