【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。更多还原

【Abstract】 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 dynam-ic 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 trans-mission. 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.更多还原