基于钙钛矿材料的太赫兹频率可调编码超表面研究  

Research of terahertz frequency tunable coding metasurface based on perovskite materials

作　　者：李依凡 杨贺 杨睿 贾一鸣 胡家敏 娄存广 于宇 刘秀玲 姚建铨[2] LI Yi-Fan;YANG He;YANG Rui;JIA Yi-Ming;HU Jia-Min;LOU Cun-Guang;YU Yu;LIU Xiu-Ling;YAO Jian-Quan(College of Electronic and Information Engineering,Key Laboratory of Digital Medical Engineering of Hebei Province,Hebei University,Baoding 071000,China;Institute of Laser and Optoelectronics,School of Precision Instruments and Optoelectronic Engineering,Tianjin University,Tianjin 300072,China;College of Electronic and Information Engineering,Hebei University of Technology,Tianjin 300131,China)

机构地区：[1]河北大学电子信息工程学院,河北省数字医疗工程重点实验室,河北保定071000 [2]天津大学精密仪器与光电子工程学院激光与光电子研究所,天津300072 [3]河北工业大学电子信息工程学院,天津300131

出　　处：《红外与毫米波学报》2025年第1期59-65,共7页Journal of Infrared and Millimeter Waves

基　　金：中国科协青年人才托举工程项目(2022QNRC001);国家重点研发计划项目(2022YFA1203502);河北省自然科学基金项目(F2023201041);河北省教育厅青年拔尖人才项目(BJK2024068);河北大学高层次人才引进项目(521100221083);河北省先进激光技术与装备重点实验室开放课题(HBKL-ALTE2024002);河北大学生命科学绿色发展研究院生物学项目(513300201004)。

摘　　要：太赫兹波因其低能性、高透过性、抗干扰能力强、指纹性等独特特性,在探测、成像、雷达、军事防御等领域发挥着至关重要的作用,近年来得到了国内外学者的高度重视。但高成本和高损耗仍然是制约太赫兹调控发展的重要因素。钙钛矿材料具有优异的光电学特性,且制备工艺简单,可大批量生产,成为制备太赫兹探测器最有潜力的材料之一。此外,钙钛矿易于调节的特性弥补了超表面难以调节的缺陷,满足了可调谐超表面的需求。将这两者结合起来,可以在光场下有效地调控太赫兹。本文设计了两种编码超表面,由有机-无机杂化钙钛矿CH_(3)NH_(3)PbI_(3)、聚酰亚胺和铝组成,并通过光场控制分别改变两种结构的工作频率,将结果与理论计算进行对比验证其效果。第一种结构可以通过光场调控,在宽带工作频率和高效工作效率之间选取。第二种结构仅工作在0.1 THz,可以通过光改变相位,使得原有结构相位出现反转,从而控制波束反射方向。在此基础上我们制备了器件并进行了验证。本文一定程度上填补了编码超表面在光场调控领域下的空白,为后续研究提供了一种思路。Due to its distinctive traits such as low energy consumption,high transmittance,potent anti-interference capacity,fingerprint,THz flexible regulation assumes a crucial role in detection,imaging,radar,and military defense,and has garnered significant attention from scholars both domestically and internationally in recent years.Nevertheless,high costs and losses remain significant factors restricting the advancement of terahertz regulation.Perovskite materials possess outstanding photoelectric properties,a straightforward preparation process,the capacity for mass production,and thereby become one of the most promising materials for the fabrication of terahertz detectors.Additionally,the facile tunability of perovskite compensates for the difficulty in adjusting the metasurface and meets the requirement for tunable metasurface.The combination of the two enables effective regulation of terahertz in the light field.In this paper,we have designed two types of coded metasurface composed of organic-inorganic hybrid perovskite CH_(3)NH_(3)PbI_(3),polyimide,and aluminum,and manipulated the operating frequencies of the two structures through light field control.The results were compared with theoretical calculations to verify the effect.The first structure can be controlled by the light field to select between a broadband operating frequency and high efficiency.The second structure functions only at 0.1THz and can vary the phase through light,thereby reversing the phase of the original structure to control the direction of beam reflection.On this basis,we fabricated the device and verified it.To a certain extent,this paper fills the void in the field of optical field regulation of coded metasurface and offers a train of thought for subsequent research.

关 键 词：太赫兹 钙钛矿 编码超表面 光场调控 

分 类 号：TN214[电子电信—物理电子学]