论文部分内容阅读
In attosecond science,investigations of field-induced ionization processes with attosecond temporal resolution have attracted a lot of attention.In a recent experiment by Shafir et al.[1],the ionization time of the electron in high-harmonic generation was determined by two-color high-harmonic spectroscopy:a weak second-harmonic field,orthogonally polarized to the fundamental laser field,was applied to manipulate the electron trajectory in two dimensions,leading to the generation of orthogonally polarized odd and even harmonics.