量子级联波长上转换系统红外响应特性研究  

Study of response characteristics for cascade infrared up-conversion system

作　　者：罗毅[1] 郝智彪[1] 王磊[1] 康健彬[1] 汪莱[1] 熊兵[1] 孙长征[1] 王健[1] 韩彦军[1] 李洪涛[1] 王禄[2] 王文新 陈弘[2] 

机构地区：[1]清华大学电子工程系清华信息科学与技术国家实验室,北京100084 [2]中国科学院物理研究所,北京100190

出　　处：《红外与激光工程》2016年第1期14-19,共6页Infrared and Laser Engineering

基　　金：国家重点基础研究发展计划(2013CB632804;2012CB315605);国家自然科学基金(61176015;61210014;51002085;61321004;61307024;61176059);国家高技术研究发展计划(2012AA050601)

摘　　要：通过对波长上转换红外探测过程的分步测试和理论计算,对量子级联波长上转换器件与系统的红外响应特性进行了深入的研究。结果表明:量子级联波长上转换红外探测器件可以在较低的本底发光下实现较强的红外响应。上转换器件的响应度在平带偏压附近迅速增加,且红外光转换为上转换器件电流的线性度良好。对于波长上转换器件的近红外发光过程,文中应用ABC模型,获得了与测试结果非常一致的系统响应电流与电流转换效率,并合理地解释了波长上转换红外探测系统的非线性响应特征。Through testing the detection process of infrared （IR） up-conversion step by step along with theoretical calculation, the IR response characteristics of the cascade IR up-converter （CIUP） and the whole up-conversion system were thoroughly studied. Test results show that CIUPs can achieve considerable IR responsivity under weak background luminescence. The responsivity of the CIUP rises very fast under the fiat-band bias and the conversion process from IR light signal into CIUP＇s electrical signal displays excellent linearity. By applying the ABC model to the near-infrared radiation process of the CIUP, the fitted response current of the up-conversion system and the fitted current conversion efficiency agree well with the measured data, which gives a reasonable explanation for the non-linearity of the system＇s IR response.

关 键 词：上转换 级联输运 响应特性 线性度 ABC模型 

分 类 号：TN362[电子电信—物理电子学]