基于超表面的高效全空间电磁调控技术

我们提出了一种替代类型的超表面，由专门设计的具有偏振依赖性透射和反射特性的元原子组成，以在整个空间中有效地操纵EM波。首先，两个元器件可以在超表面的不同侧（即透射和反射面）弯曲或聚焦EM波，具体取决于入射偏振，而第三个元器件从反射波的波弯曲器变为聚焦透镜当激发极化旋转时，透射波，所有这些功能都表现出非常高的效率（在85%-91%的范围内），总厚度∼λ=8We propose an alternative type of metasurface, which is composed of specially designed meta-atoms with polarization-dependent transmission and reflection properties to efficiently manipulate electromagnetic (EM) waves across the entire space. First, two of these meta-atoms can bend or focus EM waves on different sides of the metasurface (i.e., the transmission and reflection planes) depending on the incident polarization, while the third meta-atom acts as a switchable device: it serves as a wave bender for reflected waves and transforms into a focusing lens for transmitted waves when the excitation polarization is rotated. All these functionalities exhibit ultra-high efficiency, ranging from 85% to 91%, with a total thickness of ~λ=8.

搜集汇总

背景与挑战

背景概述

该数据集聚焦于超表面技术，旨在实现高效的全空间电磁调控。其关键特点是提出了一种由偏振依赖性元原子组成的替代超表面，能够在透射和反射面高效操纵电磁波，效率范围在85%-91%，且结构紧凑（总厚度约λ/8）。数据集包含测量数据，支持多功能电磁调控技术的研究和应用，属于光学学科领域，由复旦大学在国家重点研发计划项目下创建。