Reconfigurable and polarization-dependent optical filtering for transflective full-color generation utilizing low-loss phase-change materials

作     者：Shuo Deng Mengxi Cui Jingru Jiang Chuang Wang Zengguang Cheng Huajun Sun Ming Xu Hao Tong Qiang He Xiangshui Miao Shuo Deng;Mengxi Cui;Jingru Jiang;Chuang Wang;Zengguang Cheng;Huajun Sun;Ming Xu;Hao Tong;Qiang He;Xiangshui Miao

作者机构：School of Integrated CircuitsHuazhong University of Science and TechnologyWuhan 430074China Hubei Yangtze Memory LaboratoriesWuhan 430205China School of MicroelectronicsFudan UniversityShanghai 200433China 

出 版 物：《Journal of Semiconductors》 (半导体学报（英文版）)

年 卷 期：2024年第45卷第7期

页      面：46-53页

核心收录：

学科分类：08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：supported in part by Beijing Natural Science Foundation Grant No.Z220006 in part by the National Natural Science Foundation of China under Grant No.62304087 

主　　题：structural color reconfigurable all-dielectric metasurfaces phase change material 

摘      要：All-dielectric metasurface, which features low optical absorptance and high resolution, is becoming a promising candidate for full-color generation. However, the optical response of current metamaterials is fixed and lacks active tuning. In this work, we demonstrate a reconfigurable and polarization-dependent active color generation technique by incorporating low-loss phase change materials(PCMs) and CaF_2 all-dielectric substrate. Based on the strong Mie resonance effect and low optical absorption structure, a transflective, full-color with high color purity and gamut value is achieved. The spectrum can be dynamically manipulated by changing either the polarization of incident light or the PCM state. High transmittance and reflectance can be simultaneously achieved by using low-loss PCMs and substrate. The novel active metasurfaces can bring new inspiration in the areas of optical encryption, anti-counterfeiting, and display technologies.