Resonance-Enhanced High-Order Harmonic Generation and Frequency Mixing in Two-Color Laser Field
Zhinan ZengLaboratory for High Intensity Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, P.O. Box 800-211, Shanghai, 201800, P. R. ChinaRuxin LiLaboratory for High Intensity Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, P.O. Box 800-211, Shanghai, 201800, P. R. ChinaYa ChengLaboratory for High Intensity Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, P.O. Box 800-211, Shanghai, 201800, P. R. ChinaWei YuLaboratory for High Intensity Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, P.O. Box 800-211, Shanghai, 201800, P. R. ChinaZhizhan XuLaboratory for High Intensity Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, P.O. Box 800-211, Shanghai, 201800, P. R. China
2002en
ABI
Аннотация
The resonance-enhanced high-order harmonic generation and frequency mixing in two-color laser field are investigated theoretically in this paper. We found that. for the first time to our knowledge, in the investigation of high-order harmonic generation in two-color laser field, the atomic energy-level structure will greatly affect the efficiency of high-order harmonic generation. For a certain atomic level structure. in addition to the normal infrared driving laser field, a specially chosen high frequency and relatively low intensity laser field can greatly enhance the efficiency of high-order harmonic generation. In the investigation of high-order frequency-mixing, we found similar effects.
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