戴耀威 1,2陈聪 2高鹏 2赵佳明 2[ ... ]刘海 1,2,*
作者单位
摘要
1 中国矿业大学教育部地下空间智能控制工程研究中心,江苏 徐州 221116
2 中国矿业大学信息与控制工程学院,江苏 徐州 221116
设计了一种可由空间编码结构光控制的多功能太赫兹超表面单元,该单元由嵌有光敏半导体材料的金属裂环-二氧化硅介质层-金属底板组成。超表面单元通过结构光源的编码控制光改变单元顶层金属裂环内嵌光敏半导体的电导率来模拟不同形状的C形环,实现了具有2 bit相位编码的光控超表面单元设计。将超表面单元组成阵列,通过编码结构光的空间分布进一步实现了角度可控的异常反射,并获得不同阶数的涡旋波束。所提出的基于空间编码结构光源的新型太赫兹超表面光控方式解决了现有光控超表面功能单一、加工难度大等问题,为光控可编程太赫兹超表面技术发展提供了新的思路。
表面光学 太赫兹 光控超表面 可编程超表面 结构光 波束控制 
光学学报
2023, 43(11): 1124004
Author Affiliations
Abstract
1 Pohang University of Science and Technology, Department of Mechanical Engineering, Pohang, Republic of Korea
2 Pohang University of Science and Technology, Department of Chemical Engineering, Pohang, Republic of Korea
3 POSCO-POSTECH-RIST Convergence Research Center for Flat Optics and Metaphotonics, Pohang, Republic of Korea
The explosion in the amount of information that is being processed is prompting the need for new computing systems beyond existing electronic computers. Photonic computing is emerging as an attractive alternative due to performing calculations at the speed of light, the change for massive parallelism, and also extremely low energy consumption. We review the physical implementation of basic optical calculations, such as differentiation and integration, using metamaterials, and introduce the realization of all-optical artificial neural networks. We start with concise introductions of the mathematical principles behind such optical computation methods and present the advantages, current problems that need to be overcome, and the potential future directions in the field. We expect that our review will be useful for both novice and experienced researchers in the field of all-optical computing platforms using metamaterials.
photonic computing all-optical calculation optical neural network programmable metasurface 
Advanced Photonics
2022, 4(6): 064002

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