Cylindrical Vector Beam Holography without Preservation of OAM Modes

作者：Kai Pan, Xuanguang Wu, Peng Li, Sheng Liu, Bingyan Wei, Dong Li, Dexing Yang, Xianzhong Chen, Jianlin Zhao, Dandan Wen · 发表于：Nano Letters · 年份：2024 · DOI：10.1021/acs.nanolett.4c01490 · 被引用次数：33 · 研究领域：Metamaterials and Metasurfaces Applications、Orbital Angular Momentum in Optics、Advanced Antenna and Metasurface Technologies

Orbital angular momentum (OAM) multiplexed holograms have attracted a great deal of attention recently due to their physically unbounded set of orthogonal helical modes. However, preserving the OAM property in each pixel hinders fine sampling of the target image in principle and requires a fundamental filtering aperture array in the detector plane. Here, we demonstrate the concept of metasurface-based vectorial holography with cylindrical vector beams (CVBs), whose unlimited polarization orders and unique polarization distributions can be used to boost information storage capacity. Although CVBs are composed of OAM modes, the holographic images do not preserve the OAM modes in our design, enabling fine sampling of the target image in a quasi-continuous way like traditional computer-generated holograms. Moreover, the images can be directly observed by passing them through a polarizer without the need for a fundamental mode filter array. We anticipate that our method may pave the way for high-capacity holographic devices.