Multichannel Metasurfaces for Anticounterfeiting

Chunmei Zhang, Fengliang Dong, Yuttana Intaravanne, Xiaofei Zang, Lihua Xu, Zhiwei Song, Guoxing Zheng, Wei Wang, Weiguo Chu, Xianzhong Chen

Research output: Contribution to journalArticle

26 Downloads (Pure)

Abstract

Anticounterfeiting is an effective method to decrease the harmful effects of counterfeit goods. Optical metasurfaces can tailor light's amplitude, phase, and polarization at subwavelength resolution, enabling compact optical devices with unusual functionalities that can outperform conventional bulky components. We propose and experimentally demonstrate a multichannel metasurface device that can reconstruct helicity multiplexed holographic images and hide a grayscale image in the polarization profile of a light beam, which can be used for high-level anticounterfeiting. A dielectric metasurface consisting of nanopillars with spatially variant orientations is used to realize distinct functionalities in multiple channels. The two holographic images can be switched by changing the helicity of the incident light, while the encoded image in the polarization profile of the light beam can be revealed by a polarizer. Our work demonstrates the feasibility of the multifunctional device based on the independent control of phase and polarization in different channels, which may open an alternative window for compact optical devices with high density of functionalities for anticounterfeiting.

Original languageEnglish
Article number034028
JournalPhysical Review Applied
Volume12
Issue number3
DOIs
Publication statusPublished - 13 Sep 2019

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Multichannel Metasurfaces for Anticounterfeiting'. Together they form a unique fingerprint.

  • Cite this

    Zhang, C., Dong, F., Intaravanne, Y., Zang, X., Xu, L., Song, Z., Zheng, G., Wang, W., Chu, W., & Chen, X. (2019). Multichannel Metasurfaces for Anticounterfeiting. Physical Review Applied, 12(3), [034028]. https://doi.org/10.1103/PhysRevApplied.12.034028