Yin Xiaojin, Yang Chen, Li Jinhong, Zhang Yakai, Zhao Chungang
Appl Opt. 2022 Jan 1;61(1):115-119. doi: 10.1364/AO.443201.
Using the previously proposed spin-resolved near-field scanning optical microscopy (NSOM) technique, we mapped the spin angular momentum (SAM) axial component () distributions of tightly focused linearly and circularly polarized vortex beams. The system's effectiveness was confirmed in our previous article by mapping various tightly focused cylindrical vector vortex beams. The SAM of different focused vortex light fields is essential in the research of near-field spin optics and topological photonics. The SAM distributions of different orders of linearly and circularly polarized vortex beams were mapped by separating their right spin () and left spin component () using the relationship ∝-.
利用先前提出的自旋分辨近场扫描光学显微镜（NSOM）技术，我们绘制了紧聚焦的线偏振和圆偏振涡旋光束的自旋角动量（SAM）轴向分量（）分布。在我们之前的文章中，通过绘制各种紧聚焦的圆柱矢量涡旋光束，证实了该系统的有效性。不同聚焦涡旋光场的SAM在近场自旋光学和拓扑光子学研究中至关重要。通过利用关系∝ - 将不同阶的线偏振和圆偏振涡旋光束的右旋自旋（）和左旋自旋分量（）分开，绘制了它们的SAM分布。
