Journal
CHINESE PHYSICS B
Volume 22, Issue 1, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1674-1056/22/1/013101
Keywords
electron correlation; high-order harmonic generation; B-spline
Categories
Funding
- National Natural Science Foundation of China [10974224]
- National Basic Research Program of China [2010CB832803]
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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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