全息术
加密
电介质
材料科学
光学
极化(电化学)
多路复用
双折射
灰度
计算机科学
光电子学
物理
电信
像素
操作系统
物理化学
化学
作者
Ruizhe Zhao,Xiaofei Xu,Guangzhou Geng,Xin Li,Junjie Li,Xiaowei Li,Yongtian Wang,Lingling Huang
标识
DOI:10.1002/adfm.202100406
摘要
Abstract The diverse design freedom and mechanisms of metasurfaces motivate the manipulation of polarization in an ultrashort distance with subwavelength resolution and make metasurfaces outperform conventional polarization optical elements. However, in order to enhance the information capability and encryption security of metasurface holograms, polarization manipulation together with multiplexing technologies are still highly desired. Here, a birefringent dielectric metasurface with the capability of encoding a grayscale image in real‐space based on Malus's law by utilizing the inhomogeneous polarization distribution and realizing the reconstruction of a vectorial holographic image in k ‐space with the help of the phase profiles of different polarization components of output light is demonstrated. This novel functionality is realized by exploiting the manipulation of polarization and phase of output light simultaneously offered by the dielectric metasurface. The proposed method may enhance the information capability and security level of applications such as the anticounterfeiting and encryption.
科研通智能强力驱动
Strongly Powered by AbleSci AI