Tunable optical angular selectivity in hyperbolic metamaterial via photonic topological transitions
Tunable optical angular selectivity in hyperbolic metamaterial via photonic topological transitions
复制标题
通过光子拓扑跃迁双曲超材料中的可调谐光学角度选择性
DOI：
10.1364/oe.27.018970
复制
发表时间：
2019-06-24
期刊：
影响因子：
3.8
通讯作者：
Huang, Xing
中科院分区：
文献类型：
--
作者：
Jiang, Xiaoyun;Wang, Tao;Huang, Xing
在低损耗双曲型超材料（HMM）平台上，对基于光子拓扑跃迁（PTT）的超窄角光学透明窗口进行了理论和数值研究。结果表明，在PTT转变点附近，通过对超材料等频面（EFS）拓扑结构的调整，设计的系统具有接近垂直入射的高效光学角度选择性。此外，通过选择合适的材料和几何参数，工作波长λ（0）可灵活调节，这对以后的实验设计具有重要的指导意义。我们的方法进一步应用于超分辨率成像，分辨率至少为lambda（0）/4，并在一个显着的距离（> 12 lambda（0））。HMM支持的角度选择系统可以找到有前途的应用，高效的光操纵和无透镜片上成像。(C)根据OSA开放获取出版协议的条款，2019年美国光学学会
An ultra-narrow angular optical transparency window based on photonic topological transition (PTT) is theoretically and numerically investigated in a low-loss hyperbolic metamaterial (HMM) platform, which consists of aligned metallic nanowires embedded in dielectric host matrices. Our results indicate that, near the transition point of PTT, the designed system exhibits high-efficiency optical angular selectivity close to normal incidence by tailoring the topology of metamaterial's equi-frequency surface (EFS). Moreover, the operating wavelength (lambda(0)) is flexibly tunable by selecting appropriate material and geometrical parameters, which provides significant guidance for the later experimental design. Our method is further applied to super-resolution imaging, with a resolution of at least lambda(0)/4 and over a significant distances (> 12 lambda(0)). The HMM-supported angularly selective system could find promising applications for high-efficiency light manipulation and lensless on-chip imaging. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement