Design of multi-channel terahertz beam splitter based on Z-shaped metasurface

作     者：PAN Wu WANG Xue-yin CHEN Qi REN Xin-yu MA Yong 潘武;王泶尹;陈琦;任信毓;马勇

作者机构：College of Optoelectronic EngineeringChongqing University of Posts and TelecommunicationsChongqing 400065China 

出 版 物：《Optoelectronics Letters》 (光电子快报（英文版）)

年 卷 期：2020年第16卷第6期

页      面：437-440页

核心收录：

学科分类：0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 

基　　金：supported by the New Direction Cultivation Project of Chongqing University of Posts and Telecommunications (No.A2014-116) the Key Research Program of Chongqing University of Posts and Telecommunications on Interdisciplinary and Emerging Field (No.A2018-01) 

主　　题：THz Design of multi-channel terahertz beam splitter based on Z-shaped metasurface 

摘      要：A reflective beam splitter is proposed and verified. The unit cell of the beam splitter is composed of a metal pattern, a dielectric substrate, and a metallic ground. Each subarray structure of the device is composed of four unit cells, which are gradually rotated at 45°. The horizontal and vertical subarrays form a 4×4 gradient metasurface supercell. In the operating frequency band, the incident linearly polarized terahertz wave is reflected and divided into four beams of approximately equal power but different propagation directions. The proposed terahertz beam splitter based on metasurface has the advantages of small size, low cost and easy processing, and can be applied to terahertz stealth and imaging.