Space-frequency multiplexing holographic device and method based on optical transparent metasurface

• Main Authors: ZHOU YULONG, GAO KUN, CAO XIANGYU, YANG HUANHUAN, ZHANG ZHIYUN, LI SIJIA
• Format: Patent
• Language: Chinese; English
• Published: 27.09.2024
• Subjects: CINEMATOGRAPHY; ELECTROGRAPHY; HOLOGRAPHIC PROCESSES OR APPARATUS; HOLOGRAPHY; PHOTOGRAPHY; PHYSICS

Aiming at the defect that the transparent characteristic cannot be realized in the visible spectrum range in the prior art, the invention provides a total-space millimeter wave frequency multiplexing holographic metasurface unit based on a complex amplitude metasurface, which comprises three metal layers and two layers of transparent substrates, the first metal layer, the first transparent substrate, the second metal layer, the second transparent substrate and the third metal layer are sequentially arranged from top to bottom. The invention further provides a full-space millimeter wave frequency multiplexing holographic device based on the complex amplitude metasurface. In addition, the invention provides a full-space millimeter wave frequency multiplexing holographic method based on the complex amplitude metasurface. According to the method, the frequency multiplexing metasurface hologram can be efficiently and reliably designed. 针对现有工作在可见光谱范围内无法实现透明特性的不足，本发明提供一种基于复振幅超表面的全空间毫米波频率复用全息的超表面单元，包括三个金属层和两层透明基板，自上而