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Atomic high-order harmonic generation from a circularly polarized laser pulse |
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| Authors: | Guo Fu-Ming a Chen Gao b Chen Ji-Gen c Li Su-Yu a and Yang Yu-Jun |
| Institution: | a Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China;b School of Science, Changchun University of Science and Technology, Changchun 130022, China;c Department of Physics and Materials Engineering, Taizhou University, Taizhou 318000, China |
| Abstract: | We demonstrate theoretically that the high-order harmonic of atom can be generated by a circularly polarized laser pulse. The harmonic spectrum shows a clear cutoff with an energy Ip+2Up. Especially, 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 harmonic spectrum. |
| Keywords: | high-order harmonic generation circularly polarized intense laser |
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