Attosecond Imaging of Electronic Wave Packets
Attosecond Imaging of Electronic Wave Packets
复制标题
电子波包的阿秒成像
DOI：
10.1103/physrevlett.130.083202
复制
发表时间：
2023
影响因子：
8.6
通讯作者：
Li, Wen
中科院分区：
文献类型：
--
作者：
Stewart, Gabriel A.;Hoerner, Paul;Debrah, Duke A.;Lee, Suk Kyoung;Schlegel, H. Bernhard;Li, Wen
由于组成电子态的离域性质，电子波包除了时间演化外，还具有显著的空间演化。这种空间演化以前在阿秒时间尺度上无法进行实验研究。提出了一种相位分辨双电子角条纹成像方法，用于对氪离子中超快自旋轨道波包的空穴密度形状进行成像。此外，氙阳离子中更快的波包的运动首次被捕获：电子空穴在产生1.2 fs后被重新填充，并且在空穴产生的另一侧观察到空穴填充。
An electronic wave packet has significant spatial evolution besides its temporal evolution, due to the delocalized nature of composing electronic states. The spatial evolution was not previously accessible to experimental investigations at the attosecond timescale. A phase-resolved two-electron-angular-streaking method is developed to image the shape of the hole density of an ultrafast spin-orbit wave packet in the krypton cation. Furthermore, the motion of an even faster wave packet in the xenon cation is captured for the first time: An electronic hole is refilled 1.2 fs after it is produced, and the hole filling is observed on the opposite side where the hole is born.