The wavelength dependence of high-order harmonic generation and attosecond pulses from atom in infrared laser field

被引：3
|
作者：
Cheng Chun-Zhi [1 ]
Zhou Xiao-Xin [1 ]
Li Peng-Cheng [1 ]
机构：
[1] NW Normal Univ, Coll Phys & Elect Engn, Lanzhou 730070, Peoples R China
来源：
ACTA PHYSICA SINICA | 2011年 / 60卷 / 03期
基金：
高等学校博士学科点专项科研基金; 中国国家自然科学基金;
关键词：
strong-field approximation; high-order harmonic; attosecond pulse;
D O I：
10.7498/aps.60.033203
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Basing on the strong-field approximation, we study high harmonic generation of hydrogen atom exposed to the long wavelength infrared laser field, and analyze the wavelength dependence of conversion efficiency of high-order harmonic generation near the cut-off position. It is found that high-order harmonic yield is much lower near cut-off than in the beginning of the plateau of the harmonic generation, but the width of the attosecond pulse is narrowed with increasing wavelength.
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页数：5
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