Noninterleaved Metasurface for Full-Polarization Three-Dimensional Vectorial Holography,Laser & Photonics Reviews

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Noninterleaved Metasurface for Full-Polarization Three-Dimensional Vectorial Holography
Laser & Photonics Reviews ( IF 9.8 ) Pub Date : 2022-08-07 , DOI: 10.1002/lpor.202200351
Hui Yang ₁ , Yuting Jiang ₁ , Yueqiang Hu _{1,

2} , Kai Ou ₃ , Huigao Duan _{1,

4}

Affiliation

Metasurface-enabled full-polarization vectorial holography has attracted numerous attention due to the promising applications for multichannel displays, enhanced information capacity, and optical encryption. However, recently showcased design strategies suffer from undesirable cross-talk resulting from interleaved meta-atoms and are restricted to a two-dimensional plane. This work presents a general approach for full-polarization beam shaping in three-dimensional space by completely exploiting the capacity of a noninterleaved metasurface. The noninterleaved metasurface is spin-decoupled, which is capable of achieving independent phase control for the two orthogonal circular polarizations by combining both propagation and geometric phases. As a proof-of-concept, a three-dimensional vectorial holography capable of converting the linear polarized light to holographic images with arbitrary spatial polarization distributions is experimentally demonstrated. Taking use of the extended dimension, the z-axis distance, which provides a new degree of flexibility for boosting information capacity and security, a double-level optical encryption scheme is implemented. This work provides a compact and general scheme for full-polarization channel wavefront steering, unlocking a new door for designing planar polarization functionality devices.

中文翻译：

用于全偏振三维矢量全息术的非交错超表面

由于在多通道显示、增强信息容量和光学加密方面具有广阔的应用前景，支持超表面的全偏振矢量全息术引起了广泛关注。然而，最近展示的设计策略受到交错元原子引起的不良串扰的影响，并且仅限于二维平面。这项工作通过完全利用非交错超曲面的容量，提出了一种在三维空间中进行全偏振光束整形的通用方法。非交错超表面是自旋解耦的，能够通过结合传播相位和几何相位来实现对两个正交圆偏振的独立相位控制。作为概念验证，实验证明了能够将线性偏振光转换为具有任意空间偏振分布的全息图像的三维矢量全息术。利用扩展维度，z轴距离，为提高信息容量和安全性提供了新的灵活性，实现了双层光学加密方案。这项工作为全偏振通道波前控制提供了一种紧凑而通用的方案，为设计平面偏振功能器件打开了一扇新门。

更新日期：2022-08-07

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