论文标题
具有扭曲光电子的强场手性成像
Strong-field chiral imaging with twisted photoelectrons
论文作者
论文摘要
分子手性的超快成像是迈向成像和解释复杂和生物学相关分子中电子动力学的梦想的关键步骤。在这里，我们提出了一种新的超快手性现象，利用了电子光学的最新进展，从而可以进入自由电子的轨道角动量。我们表明，手性靶标的强场电离具有线性极化的800 nm激光脉冲产生光电子涡流，其手性揭示了靶标的光电，我们讨论了这种现象的基础机制。我们的作品在基于回忆的手性成像中开辟了新的观点。
Ultrafast imaging of molecular chirality is a key step towards the dream of imaging and interpreting electronic dynamics in complex and biologically relevant molecules. Here, we propose a new ultrafast chiral phenomenon exploiting recent advances in electron optics allowing access to the orbital angular momentum of free electrons. We show that strong-field ionization of a chiral target with a few-cycle linearly polarized 800 nm laser pulse yields photoelectron vortices, whose chirality reveals that of the target, and we discuss the mechanism underlying this phenomenon. Our work opens new perspectives in recollision-based chiral imaging.
