Attosecond pulse extreme-ultraviolet photoionization in a two-color laser field |
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| Authors: | Huo Yiping Zeng Zhinan Leng Yuxin Li Ruxin Xu Zhizhan Guo Chunlei Sun Zhenrong Rhee Yongjoo |
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| Affiliation: | Key Laboratory for High Intensity Optics, Shanghai Institute of Optics and Fine Mechanics, The Chinese Academy of Sciences, Shanghai 201800, China. huoyiping@mail.siom.ac.cn |
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| Abstract: | Attosecond-pulse extreme-ultraviolet (XUV) photoionization in a two-color laser field is investigated. Attosecond pulse trains with different numbers of pulses are examined, and their strong dependence on photoelectronic spectra is found. Single-color driving-laser-field-assisted attosecond XUV photoionization cannot determine the number of attosecond pulses from the photoelectronic energy spectrum that are detected orthogonally to the beam direction and the electric field vector of the linearly polarized laser field. A two-color-field-assisted XUV photoionization scheme is proposed for directly determining the number of attosecond pulses from a spectrum detected orthogonally. |
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