期刊
CHINESE PHYSICS B
卷 22, 期 1, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1674-1056/22/1/013101
关键词
electron correlation; high-order harmonic generation; B-spline
资金
- National Natural Science Foundation of China [10974224]
- National Basic Research Program of China [2010CB832803]
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.
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