论文标题
来自原子分阶段阵列的光学涡流场的拓扑和极化
Topology and Polarization of Optical Vortex Fields from Atomic Phased Arrays
论文作者
论文摘要
我们开发了理论形式主义，用于通过分阶段原子来产生光学涡旋。使用Jacobi-Anger的扩展，我们演示了所得的场拓扑，并确定具有给定拓扑电荷的涡流所需的阵列元素数量最少。考虑到电磁场的自旋和轨道角动量，考虑了矢量涡流。已经发现，对于相位奇异性附近的涡流场，3D极化参数的横向依赖性与辐射源的距离无关。
We developed theoretical formalism for generation of optical vortices by phased arrays of atoms. Using Jacobi-Anger expansion, we demonstrate the resulting field topology and determine the least number of array elements necessary for generation of vortices with a given topological charge. Vector vortices were considered, taking into account both spin and orbital angular momenta of electromagnetic fields. It was found that for the vortex field near the phase singularity, the transverse-position dependence of 3D polarization parameters is independent of the distance to the radiation source.
