微透镜列阵提高红外探测器探测能力的方法研究  

Method for Improving Performance of Infrared Detector by Micro-Optical Lens Array

作　　者：杜春雷[1] 林祥棣[1] 周礼书[1] 白临波[1] 邱传凯[1] 徐国森[2] 方家雄 王继元[2] 

机构地区：[1]中国科学院光电技术研究所微细加工光学技术国家重点实验室,成都610209 [2]中国科学院上海技术物理研究所,上海200083

出　　处：《光学学报》2001年第2期246-249,共4页Acta Optica Sinica

基　　金：国家科委 86 3高科技及国防预研等资助项目

摘　　要：研究用微光学方法提高红外探测器探测能力的机理 ,通过实验将锗微透镜列阵耦合到 180元HgCdTe焦平面红外探测器上 ,使耦合组件探测率提高到原来的 2 .8倍。提出的光学耦合效率概念为客观评价微光学聚能元件综合质量及耦合机构性能提供了一种新的方法。The mechanism for improving performance of infrared detector using micro optical method is studied. A germanium microlens array was coupled to a 180 unit infrared HgCdTe focal plane array detector. The detectivity of the coupled device was increased to 2.8 fold. As an objective standard, the optical coupling efficiency is proposed to evaluate the quality of micro optical concentrator and the coupled method. The cooling shield effect caused by microlens array, which is useful to limit the background radiation was also discussed.

关 键 词：微透镜列阵 红外焦平面探测器 探测率 冷屏效应 光学耦合效率 微光学 

分 类 号：TN215[电子电信—物理电子学] O439[机械工程—光学工程]