基于双吸收结构的谐振腔增强型光探测器  

Resonant-cavity-enhanced photodetector based on dual-absorption structure

作　　者：王伟[1] 黄永清[1] 段晓峰[1] 颜强[1] 蔡世伟[1] 郭经纬[1] 黄辉[1] 任晓敏[1] 

机构地区：[1]北京邮电大学信息光子学与光通信国家重点实验室,北京100876

出　　处：《光电子．激光》2011年第7期972-975,共4页Journal of Optoelectronics·Laser

基　　金：国家"973"计划资助项目(2010CB327600);国家"863"计划资助项目(2007AA03Z418);国家自然科学基金资助项目(61020106007);国家自然科学基金重大国际(地区)合作研究资助项目(90201035);高等学校学科创新引智计划资助项目(B07005)

摘　　要：为了实现对传统谐振腔增强型(RCE)光探测器的优化,提出了一种具有双吸收结构的RCE光探测器。首先从理论上分析了它的量子效率和高速响应特性,然后将其与传统的RCE光探测器进行了比较。结果表明,双吸收结构RCE光探测器在保持高速响应特性的基础上,其量子效率较传统RCE光探测器得到了进一步提高。实验上成功制备了双吸收结构的RCE光探测器,其在1 525 nm波长处获得了63%的峰值量子效率。A novel resonant-cavity-enhanced（RCE） photodetector based on dual-absorption structure is proposed to optimize the conventional RCE photodetector.Furthermore,its quantum efficiency and high speed response properties are also analyzed theoretically followed by a comparison between the RCE photodetector based on dual-absorption structure and the conventional one.All of the results indicate that the new design achieves a rather higher quantum efficiency while remaining the high speed response property compared with the conventional one.Eventually,the new designed photodetector,which attains a peak quantum efficiency of 63% around wavelength of 1 525 nm,is fabricated successfully.

关 键 词：光电子学 谐振腔增强型(RCE)光探测器 双吸收结构 量子效率 高速响应 

分 类 号：TN247[电子电信—物理电子学]