Full-Color Holographic Display and Encryption with Full-Polarization Degree of Freedom
Full-Color Holographic Display and Encryption with Full-Polarization Degree of Freedom
复制标题
全偏振自由度的全彩全息显示和加密
DOI：
10.1002/adma.202103192
复制
发表时间：
2021-08-07
影响因子：
29.4
通讯作者：
Zhao, Jianlin
中科院分区：
文献类型：
--
作者：
Guo, Xuyue;Zhong, Jinzhan;Zhao, Jianlin
超颖表面提供了一个紧凑而强大的平台，用于操纵光的基本属性，并在光学全息显示和信息加密方面显示出前所未有的能力。为了增加信息显示/存储容量，具有更多偏振操纵通道和全色全息功能的超表面现在是迫切需要的。在这里，提出了一个最低限度的电介质超颖表面的能力，全色全息编码与任意偏振的实验证明。没有纳米结构搜索中令人生畏的探索和计算问题，全色全息图像可以通过基于四原子宏像素几何相位元表面的矢量重叠关联和k空间重叠关联复用到任意偏振通道。由于偏振和颜色空间的全自由度调谐，实现了全息3D成像和信息加密等应用场景。该策略在3D显示、增强/虚拟现实、高密度数据存储和加密等应用中具有很大的潜力。
Metasurfaces provide a compact and powerful platform for manipulating the fundamental properties of light, and have shown unprecedented capabilities in both optical holographic display and information encryption. For increasing information display/storage capacity, metasurfaces with more polarization manipulation channel and full-color holographic functionality are now an urgent requirement. Here, a minimalist dielectric metasurface with the capability of full-color holography encoded with arbitrary polarization is proposed and experimentally demonstrated. Without the daunting exploratory and computational problem in nanostructure searching, full-color holographic images can be multiplexed into arbitrary polarization channels through vectorial ptychography and k-space ptychography based on tetratomic macropixel geometric phase metasurfaces. Thanks to the full degree of freedom tuning in polarization and color spaces, the application scenarios such as holographic 3D imaging and information encryption are realized. The strategy exhibits promising potential in applications of 3Dl display, augmented/virtual reality, high-density data storage, and encryption.