论文标题
具有局部相，极化和天空质地的激光场中的电子
Electrons in intense laser fields with local phase, polarization, and skyrmionic textures
论文作者
论文摘要
激光场可以以次波长尺度形成，以在旋转角动量，轨道结构或拓扑结构中具有特定的分布。我们研究这些各种特征如何影响强烈的非线性电子动力学。具体而言，我们在未结合的电子的波功能中得出了封闭的表达式，受到一般结构化的激光场的影响，并证明了其用于将传播光涡流的轨道角动量印记到从原子发出的光光电子上的轨道角动量，并通过光学涡流传播。还表明，当通过聚焦，强烈的激光场移动时，光电子可以加速或动量质感，其旋转角动量被调节以具有径向极化，这也意味着存在强烈的电纵向成分。进一步的结果显示在激光场拓扑的次波长时空成像上，如该田间的旋转和轨道分布明确证明，光光电子成像成像的无损传播光学空中。
Laser fields can be shaped on a subwavelength scale as to have a specific distribution in spin angular momentum, orbital structure, or topology. We study how these various features affect the strongly nonlinear electron dynamics. Specifically, we derive closed expressions for the wave function of an unbound electron subject to a generally structured, intense laser field and demonstrate its use for imprinting the orbital angular momentum of a propagating optical vortex onto photoelectrons emitted from atoms and traveling through the optical vortex. It is also shown that photoelectrons can be accelerated or momentum textured when moving through a focused, intense laser field whose spin angular momentum is modulated as to have a radial polarization, which also implies the presence of a strong electrical longitudinal component. Further results are presented on the subwavelength spatiotemporal imaging of a laser field topology, as demonstrated explicitly for the field's spin and orbital distributions of lossless propagating optical skyrmions imaged by photoelectrons.
