Programmable meta-holography dynamics enabled by grating-modulation  

作　　者：RUNLONG RAO SHUAI WAN ZHE LI YANGYANG SHI ZHONGYANG LI 

机构地区：[1]Electronic Information School,Wuhan University,Wuhan 430072,China [2]Wuhan Institute of Quantum Technology,Wuhan 430206,China [3]School of Microelectronics,Wuhan University,Wuhan 430072,China [4]Suzhou Institute of Wuhan University,Suzhou 215123,China

出　　处：《Photonics Research》2024年第7期1522-1526,共5页光子学研究（英文版）

基　　金：National Key Research and Development Program of China (2022YFB3808600);National Natural Science Foundation of China (12204360);Fundamental Research Funds for the Central Universities(2042023kf0227);Wuhan Knowledge Innovation Special Project (2023020201010061);Natural Science Foundation of Jiangsu Province (BK20220281)。

摘　　要：Towards next-generation intelligent display devices, it is urgent to find a cheap and convenient dynamic optical control method. Conventional gratings are widely used as cheap diffractive elements due to their effective optical control capabilities. However, they are limited within multi-function or complex optical modulation due to the lack of accurate control of the amplitude/phase at pixel-level. Here, a metasurface-assisted grating-modulation system is originally proposed to achieve switchable multi-fold meta-holographic dynamics. By incorporating metasurfaces with traditional gratings and tuning their relative coupling positions, the modulation system gains the optical modulation capability to realize complex optical functionalities. Specifically, by varying the grating periods/positions relative to the metasurface, 2–8 holographic image channels are programmed to be dynamically exhibited and switched. The proposed metasurface-assisted grating-modulation approach enjoys cost-effective convenience, strong encoding freedom, and facile operation, which promises programmable optical displays,optical sensors, optical information encryption/storage, etc.

关 键 词：tuning SWITCHED HOLOGRAPHIC 

分 类 号：O438.1[机械工程—光学工程]