Simultaneous Full-Color Printing and Holography Enabled by Centimeter-Scale Plasmonic Metasurfaces
Simultaneous Full-Color Printing and Holography Enabled by Centimeter-Scale Plasmonic Metasurfaces
复制标题
厘米级等离激元超表面实现同时全彩打印和全息术
DOI：
10.1002/advs.201903156
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发表时间：
2020-05-01
期刊：
影响因子：
15.1
通讯作者：
Luo, Xiangang
中科院分区：
文献类型：
--
作者：
Zhang, Fei;Pu, Mingbo;Luo, Xiangang
光学超曲面使人们能够以新颖的方式局部操控光的幅度、相位和偏振，为高密度光存储、全息照相和显示器等应用提供了一种新的可行技术。在这里，提出了一种由厘米级等离子体亚曲面实现的高安全级别的平台，具有全色、高纯度和增强的信息容量属性。使用包括幅度、相位和偏振在内的全部光参数，可以将多种类型的独立信息嵌入到单个元标记中。在非相干白光下，Metammark显示为偏振和角度编码的全色图像，具有灵活控制的色调、饱和度和亮度，而在相干激光照明下切换为多波长全息图。更重要的是，对于实际应用来说，极浅的功能层使这种厘米级的等离子体元标记适合成本效益高的大规模生产工艺。考虑到所提出的多功能等离子体亚表面的优异性能，这项工作在防伪、信息安全、高密度光存储等方面具有广泛的应用前景。
Optical metasurfaces enable novel ways to locally manipulate light's amplitude, phase, and polarization, underpinning a newly viable technology for applications, such as high-density optical storage, holography, and displays. Here, a high-security-level platform enabled by centimeter-scale plasmonic metasurfaces with full-color, high-purity, and enhanced-information-capacity properties is proposed. Multiple types of independent information can be embedded into a single metamark using full parameters of light, including amplitude, phase, and polarization. Under incoherent white light, the metamark appears as a polarization- and angle-encoded full-color image with flexibly controlled hue, saturation, and brightness, while switching to multiwavelength holograms under coherent laser illumination. More importantly, for actual applications, the extremely shallow functional layer makes such centimeter-scale plasmonic metamarks suitable for cost-effective mass production processes. Considering these superior performances of the presented multifunctional plasmonic metasurfaces, this work may find wide applications in anticounterfeiting, information security, high-density optical storage, and so forth.