Faisal F H M, Abdurrouf A
Fakultt fr Physik, Universitt Bielefeld, Postfach 100131, D-33501 Bielefeld, Germany.
Phys Rev Lett. 2008 Mar 28;100(12):123005. doi: 10.1103/PhysRevLett.100.123005. Epub 2008 Mar 26.
Recent reports on intense-field pump-probe experiments for high-order harmonic generation (HHG) from coherently rotating linear molecules have revealed remarkable characteristic effects of the simultaneous variation of the polarization geometry and the time delay on the high-order harmonic signals. We analyze the effects and give a unified theoretical account of the experimental observations. Furthermore, characteristic behavior at critical polarization angles are found that can help to identify the molecular orbital symmetry in connection with the problem of molecular imaging from the HHG data.
最近关于从相干旋转线性分子产生高次谐波（HHG）的强场泵浦-探测实验的报告揭示了偏振几何结构和时间延迟同时变化对高次谐波信号的显著特征效应。我们分析了这些效应，并对实验观测结果给出了统一的理论解释。此外，还发现了临界偏振角处的特征行为，这有助于从高次谐波数据中结合分子成像问题识别分子轨道对称性。
