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 

机构地区：[1]School of Integrated Circuits,Huazhong University of Science and Technology,Wuhan 430074,China [2]Hubei Yangtze Memory Laboratories,Wuhan 430205,China [3]School of Microelectronics,Fudan University,Shanghai 200433,China

出　　处：《Journal of Semiconductors》2024年第7期46-53,共8页半导体学报（英文版）

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。

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.

关 键 词：structural color RECONFIGURABLE all-dielectric metasurfaces phase change material 

分 类 号：TB34[一般工业技术—材料科学与工程]