| Pondermotive Shift of Photoelectron Spectra in Intense Laser Field |
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| 作者姓名： | 白丽华 张敬涛 王懿 徐至展 |
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| 作者单位： | [1]State Key Laboratory for High Field Laser Physics, Shanghai Institute of Optics and Fine mechanics, Chinese Academy of Sciences, Shanghai 201800 [2]Graduate School of Chinese Academy of Sciences, Beijing 100049 |
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| 基金项目： | Supported by the Shanghai Rising-Star Programme, the National Natural Science Foundation of China under Grant No 60408008, and the Natural Science Key Foundation of Shanghai under Grant No 04JC14036. |
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| 摘 要： | In a recent experimental work on the excess photon detachment （EPD） of H^- ions Phys. Rev. Lett. 87 （2001） 243001] it has been found that the ponderomotive shift of each EPD peak increases with the order of the EPD channel. By using a nonperturbative quantum scattering theory, we obtain the kinetic energy spectra for the differential detachment rate Mong the laser polarization for several laser intensities. It is demonstrated that higher order EPD peaks are produced mainly at relatively higher laser intensities. By calculating the overall EPD spectra with varying laser intensities, it is found that the ponderomotive shift of each EPD peak increases with the order of the EPD channel Our calculations are in good agreement with the experimental observation. It is found that different EPD channels occur mainly when the laser field reaches some values, thus the intensity distribution of the laser field is responsible for the varying ponderomotive shifts.
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| 关 键 词： | 光电子光谱 强激光场 氢离子 量子散射 |
| 收稿时间： | 2006-02-14 |
| 修稿时间： | 2006-02-14 |
Pondermotive Shift of Photoelectron Spectra in Intense Laser Field |
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| BAI Li-Hua, ZHANG Jing-Tao, WANG Yi, XU Zhi-Zhan.Pondermotive Shift of Photoelectron Spectra in Intense Laser Field[J].Chinese Physics Letters,2006,23(7):1749-1752. |
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| Authors: | BAI Li-Hua ZHANG Jing-Tao WANG Yi XU Zhi-Zhan |
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