基于VO2相变特性的THz波动态调控研究进展  

Research progress on dynamic regulation of THz wave based on VO2 phase transition characteristics

作　　者：路学光 彭博 黄婉霞[1] 施奇武[1] Lu Xueguang;Peng Bo;Huang Wanxiang;Shi Qiwu(College of Material Science and Engineering,Sichuan University,Chengdu 610064,China)

机构地区：[1]四川大学材料科学与工程学院

出　　处：《电子技术应用》2019年第8期26-31,39,共7页Application of Electronic Technique

摘　　要：太赫兹(Terahertz,THz)波位于光子学向电子学的过渡区域,在高速宽带通信、雷达、成像等领域具有重要应用前景。但目前用于THz波动态调控的器件仍比较缺乏,这在一定程度上限制了THz技术的发展。VO2具有独特的金属—绝缘体相变特性,相变过程可以应用于动态调控THz波传输。探索超材料与VO2结合以制备高效、动态、灵活的太赫兹功能器件也是近来的研究热点。简述了VO2的相变特性,并分析了微观结构和化学成分等因素对相变特性的影响;系统回顾了VO2薄膜相变过程中的THz波调控性能研究进展,总结了VO2与超材料不同结合方式在THz波动态调控方面的应用;并对基于VO2相变特性的THz波调控功能器件发展前景与挑战进行了展望。The terahertz(THz) wave is located in the transition region of photonics to electronics, and has important application prospects in high-speed broadband communication, radar, imaging and other fields. However, the devices currently used for dynamic regulation of THz waves are still lacking, which limits the development of THz technology to some extent. VO2 has an unique metal-insulator phase change characteristic, and the phase change process can be applied to dynamically regulate THz wave transmission. It is also a recent research hotspot to explore the combination of metamaterials and VO2 to prepare efficient, dynamic and flexible terahertz functional devices. In this paper, the phase transition characteristics of VO2 are briefly described, and the effects of microstructure and chemical composition on phase transition characteristics are analyzed. The research progress of VO2 film in THz band regulation performance is reviewed systematically, and the different combinations of VO2 and metamaterials are summarized. In the application of THz wave dynamic regulation, the development prospects and challenges of THz wave regulation function devices based on VO2 phase transition characteristics are prospected.

关 键 词：超材料 太赫兹 氧化钒 调制 

分 类 号：TN761[电子电信—电路与系统]