Controlling the interference of multiple molecular orbitals in high-harmonic generation.
Controlling the interference of multiple molecular orbitals in high-harmonic generation.
复制标题
DOI：
10.1103/physrevlett.104.233904
复制
发表时间：
2010-06
影响因子：
8.6
通讯作者：
Hans Jakob Wörner;J. Bertrand;P. Hockett;P. Corkum;D. M. Villeneuve
中科院分区：
文献类型：
--
作者：
Hans Jakob Wörner;J. Bertrand;P. Hockett;P. Corkum;D. M. Villeneuve
我们展示了一种新的方法来调查的起源，在高次谐波产生的光谱结构。我们报告的高次谐波光谱在对齐的氮和二氧化碳分子的详细测量。改变产生的激光场的波长和强度，我们表明，在对齐的N2分子的最小值几乎不受影响，而在对齐的CO2分子的最小值超过15 eV的位移。我们的定量分析表明，多轨道的干扰和它们的结构特征都影响最小值的位置。我们的方法提供了一个简单的方法，在更复杂的分子中的高次谐波产生过程的调查。
We demonstrate a new method to investigate the origin of spectral structures in high-harmonic generation. We report detailed measurements of high-harmonic spectra in aligned nitrogen and carbon dioxide molecules. Varying the wavelength and intensity of the generating laser field, we show that the minimum in aligned N2 molecules is nearly unaffected, whereas the minimum in aligned CO2 molecules shifts over more than 15 eV. Our quantitative analysis shows that both the interference of multiple orbitals and their structural characteristics affect the position of the minimum. Our method provides a simple approach to the investigation of the high-harmonic generation process in more complex molecules.