用于红外探测器的高红外吸收率结构研究进展

高红外吸收是实现高灵敏度红外探测器的一个重要途径。探测器的响应率与热吸收率紧密相关。高红外吸收将提升红外探测器的探测性能。鉴于高吸收率的重要性,对国内外研究中典型的高红外吸收结构的研究进展进行介绍。目前典型新型高吸收结构有基于新型材料(如超材料)的高吸收结构和基于金属光栅高吸收结构。研究表明这些结构在某些波段可实现近100%的完美吸收,是发展高灵敏探测器的新途径。

Development of High Infrared Absorption Rate Structures for IR Detector

High infrared absorption rate is a great important parameter for high sensitive uncooled infrared detectors. The responsibility of detectors is closely related to infrared absorption rate. High infrared absorption rate can improve perform- ance of infrared detector. Owing to the importance of high-absorption rate, the worldwide researches to design structure to achieve high infrared absorption in recent years are reviewed. At present, the typical new high-absorption structures includs new materials, such as metamaterials, and metal-grating structure. At the same time, theoretical explanations on each structure are presented.