全息术
加密
多路复用
光学
极化(电化学)
计算机科学
频道(广播)
鬼影成像
计算机视觉
物理
电信
操作系统
物理化学
化学
作者
Naixuan Zhao,Zile Li,Guodong Zhu,Jiaxin Li,Liya Deng,Qi Dai,Weiguo Zhang,Zhixue He,Guoxing Zheng
出处
期刊:Optics Express
[The Optical Society]
日期:2022-09-27
卷期号:30 (21): 37554-37554
被引量:2
摘要
Structural-color nanoprinting, which can generate vivid colors with spatial resolution at subwavelength level, possesses potential market in optical anticounterfeiting and information encryption. Herein, we propose an ultracompact metasurface with a single-cell design strategy to establish three independent information channels for simultaneous watermarked structural-color nanoprinting and holographic imaging. Dual-channel spectrum manipulation and single-channel phase manipulation are combined together by elaborately introducing the orientation degeneracy into the design of variable dielectric nanobricks. Hence, a structural-color nanoprinting image covered with polarization-dependent watermarks and a holographic image can be respectively generated under different decoded environments. The proposed metasurface shows a flexible method for tri-channel image display with high information capacity, and exhibits dual-mode anticounterfeiting with double safeguards, i.e., polarization-controlled watermarks and a far-field holographic image. This study provides a feasible route to develop multifunctional metasurfaces for applications including optical anticounterfeiting, information encryption and security, information multiplexing, etc.
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