The optical topology, which serves as a stable spatial electromagnetic structure, offers a new dimension for applications in the field of optical information processing, transmission, and storage. In recent years, there has been an increasing focus on these spatially structured light fields. By reversing the radiation of orthogonal dipole pairs, we propose an approach to generate Meron topologies within the focused light field while also investigating the evolution of the Meron structure along the longitudinal axis. Through introducing a dipole placed along the z-axis, we achieve precise positioning and fine adjustment of the topological center. The stability of Meron under a high numerical aperture objective lens (NA = 0.95) can be effectively demonstrated.

中文翻译：

---

在紧密聚焦的电磁场中创建和操纵光学 Meron 拓扑

光拓扑作为稳定的空间电磁结构，为光信息处理、传输和存储领域的应用提供了新的维度。近年来，人们越来越关注这些空间结构光场。通过反转正交偶极子对的辐射，我们提出了一种在聚焦光场内生成 Meron 拓扑的方法，同时还研究了 Meron 结构沿纵轴的演化。通过引入沿z轴，实现拓扑中心的精确定位和微调。可以有效地证明Meron在高数值孔径物镜（NA = 0.95）下的稳定性。