基于相关光子的单光子探测器量子效率测量系统  

Measurement System for Quantum Efficiency of the Single Photon Detector Based on Correlated Photons

作　　者：史学舜[1,2] 刘长明[1] 赵坤[1] 陈海东[1] 

机构地区：[1]中国电子科技集团公司第四十一研究所,山东青岛266555 [2]电子测试技术重点实验室,山东青岛266555

出　　处：《光子学报》2017年第3期56-61,共6页Acta Photonica Sinica

基　　金：国家高技术研究发展计划(No.2015AA123702);国家技术基础项目(No.J312012B001);电子测试技术重点实验室基金(No.9140C120302150C12058)资助~~

摘　　要：为准确测量近红外波段单光子探测器量子效率,搭建了基于自发参量下转换效应的测量系统.系统利用中心波长为518nm的脉冲激光泵浦周期极化磷酸氧钛钾晶体,通过自发参量下转换过程产生相关光子对,分别测量了Si和InGaAs雪崩光电二极管单光子探测器在778nm和1 550nm波长点的量子效率,并对测量不确定度进行了分析.实验表明,该装置可以测量近红外单光子探测器量子效率参量,测量不确定度均优于1%.The measurement facility based on parametric down-conversion technique was established to measure the quantum efficiency of the near-infrared band single-photon detector.The correlated photons were generated via spontaneous parametric down-conversion in a periodically poled potassium titanyl phosphate crystal pumped by a 518 nm picosecond laser.The detection efficiency of Si-avalanche photodiode and InGaAs-avalanche photodiode single-photon detectors were measured via correlated photon pairs at 778 nm and 1 550 nm,respectively,and the measrement uncertainty was analyzed.The experiment results indicated that the facility can measuer near inferad single-photon detectors quantum efficiency with 1% measrement uncertainty.

关 键 词：量子光学 量子效率测量 自发参量下转换 相关光子 单光子探测器 

分 类 号：O437[机械工程—光学工程] O432[理学—光学]