论文标题
通过反向旋转的双子激光场对手性分子的光离子：手性toclocl
Photoionization of chiral molecules by counter-rotating bicircular laser fields: a chiral attoclock
论文作者
论文摘要
通过强烈的激光场测量和控制电离动力学，最近从研究隧道时间延迟到电子全息图的Attosent分子成像，导致了重要的突破。在这些实验中，提取离子潜力对离职电子的微妙影响是资本重要性，而且通常具有挑战性。在这里，我们表明，分子手性自然可以通过沿激光传播方向打破光电离过程的对称性来解决这个问题。使用反向旋转的双子双子激光场，我们产生两个具有不同电离动力学的电子家族。它们在动量空间中的重叠导致量子干扰，这对分子手性极为敏感。通过旋转激光场对电子的角条纹充当toclock，将电离动力学编码到电子射出角上。手势敏感的前向/向后不对称揭示了离子电位在电离过程中的短而长的空间范围影响。
Measuring and controlling the ionization dynamics by intense laser fields has recently led to important breakthroughs, from the investigation of tunneling time delays to attosecond molecular imaging by electron holography. In these experiments, extracting the subtle influence of the ionic potential on the departing electrons is of capital importance, and often challenging. Here we show that molecular chirality naturally provides a solution to this issue by breaking the symmetry of the photoionization process along the laser propagation direction. Using counter-rotating bicircular bichromatic laser fields, we produce two families of electrons with distinct ionization dynamics. Their overlap in momentum space results in quantum interferences, which are extremely sensitive to molecular chirality. The angular streaking of the electrons by the rotating laser field acts as an attoclock, encoding the ionization dynamics onto the electron ejection angle. Chirosensitive forward/backward asymmetries reveal the short and long spatial range influence of the ionic potential in the ionization process.
