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太赫兹超材料分束器设计及其特性分析 被引量:2

Design and Characteristics of Terahertz Metamaterial Beam Splitter
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摘要 提出一种超材料太赫兹分束器,其单元结构由顶层金属条带、中间介质层和底层金属板组成。利用4个旋转步进为45°的单元周期排列构成了4×4的相位梯度超表面。当太赫兹波垂直入射到阵列表面时,电磁波被反射成四束能量相等但传播方向不同的波,且不同频点的反射角不同。该分束器具有体积小、成本低的优点,可应用于太赫兹隐身和太赫兹成像等方面。 The unit structure of the proposed metamaterial terahertz beam splitter is composed of the top metal strip,the intermediate medium layer and the bottom metal plate.By spatially arranging four unit cells in a rotation angle step of 45°,aphase gradient metasurface of4×4 with a phase difference of 90°between adjacent unit cells is designed.When a terahertz wave is normal incident into the surface of the array structure,the wave is reflected into four beams with equal energy but different propagating directions,and also reflection angles are different at different frequency.The terahertz beam splitter wtih small size and low cost can be applied the fields such as terahertz stealth and terahertz imaging.
作者 王泶尹 潘武 陈琦 任信毓 WANG Xueyin;PAN Wu;CHEN Qi;REN Xinyu(College of Photoelectronic Engin.,Chongqing University of Posts and Telecommun.,Chongqing 400065,CHN)
出处 《半导体光电》 CAS 北大核心 2019年第2期185-188,共4页 Semiconductor Optoelectronics
基金 重庆邮电大学新方向培育计划项目(A2014-116)
关键词 太赫兹 超材料 分束器 terahertz metamaterial beam splitter
作者简介 王泶尹(1994-),女,硕士研究生,主要研究方向为太赫兹技术;潘武(1966-),男,四川大英人,博士,教授,主要从事太赫兹技术、超介质材料及应用研究。E-mail:panwu@cqupt.edu.cn。
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