隨著科技的發展，光學安全平台與資訊加密受到高度重視。金屬超穎介面為由人造次波長結構所組成的準二維材料，經由入射電磁波可產生表面電漿共振，可於適當的結構設計下達到所需的光學特性。本文提出結合DBR(分散式布拉格反射鏡)基板和超穎奈米結構，利用它們之間的耦合於反射光譜產生多重共振特性，達到資訊加密等應用需具有多波長高Q共振的效果。
我們所展示的多重共振超穎介面由優化過後的多波長超穎單元結構所組成，並利用幾何相位的概念達到2π相位調控，以及使用向量全像術的多偏振控制功能產生多個獨立通道影像，最後結合結構色刻印特徵，預期可以增強光學加密的安全性。我們提出的光學加密技術，預估能將32個通道(8個波長×4個偏振)的資訊編碼到我們所設計的超穎介面中。

With the development of technology, optical security platform and information encryption have gained a lot of attention. Plasmonic metasurfaces are quasi-two-dimensional materials composed of artificial sub-wavelength structures. Via appropriate structural design and optimization, light attributes like amplitude, phase, and polarization can be modulated at will with plasmonic resonances. In this work, we propose that multiple resonances can be generated by incorporating the optical interaction between a combine distributed Bragg reflector (DBR) substrate and nanostructures. The realization of multi-resonances with a simple structural configuration will be practical for information encryption.
The geometric phase method is utilized to achieve 2π phase shift. Besides, the proposed multi-resonance metasurface is multiplexed with polarization for realizing the multi-color vectorial meta-hologram, which can assist in approaching the dynamic optical encryption system. Finally, the combination of the multi-channel vectorial meta-hologram and the structural color printing will be innovated for real-time multi-channel optical information encryption.

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