摘要
目前国内缺乏专门针对四象限探测器的测试标准,导致在实际测试中存在参数不统一、测试体系不完善等问题。该文从四象限探测器的工作原理出发,分析四象限探测器关键参数及其定义,研究形成四象限探测器关键参数的测试方法,并选取一款四象限APD探测器组件开展测试验证,对比分析不同工作温度对产品噪声、上升时间、下降时间等关键参数的影响。样品各象限响应度不小于1.40×10~5 V/W,象限间响应一致性超过96%;各象限噪声均为1.09 mV,表现出良好的性能。同时样品的噪声与其工作温度成正比;当工作温度为25℃时,组件上升时间与下降时间均最短,响应速度最快。实验结果表明形成的测试方法合理可行,能够为四象限探测器的测试及评价提供借鉴和参考。
There is no special test standard for the four-quadrant photodetectors,which leads to the nonuniform parameters and imperfect test system in the actual test.Key parameters of four-quadrant photodetectors have been determined by analyzing their working mechanism,and a testing method of fourquadrant photodetectors has been proposed in this paper.Verification has been accomplished by choosing a four-quadrant APD photodetector module,and the effect of different working temperatures on the noise,rise time and fall time of the product has been analyzed.A good performance of the four-quadrant photodetector is achieved,with a responsivity of more than 1.40×10~5 V/W and a noise of 1.09 mV for every quadrant,a consistency of responsivity of more than 96%.Meanwhile,the noise of the device increases as the working temperature is rising,and the optimal response speed is achieved at the working temperature of 25℃with the least rise time and fall time.The results have indicated that the proposed testing method of four-quadrant photodetectors is reasonable,which is instructive for the test and evaluation of four-quadrant photodetectors.
作者
王之哲
陈勇国
陈思
王小强
WANG Zhizhe;CHEN Yongguo;CHEN Si;WANG Xiaoqiang(CEPREI,Guangzhou 510610,China)
出处
《中国测试》
CAS
北大核心
2019年第2期1-6,共6页
China Measurement & Test
基金
国家重点研发计划(2017YFB0503200)
广州市产学研协同创新重大专项(201604046021)
共性技术项目(JAD1659140)
关键词
应用光学
四象限探测器
测试方法
激光跟踪
applied optics
four-quadrant photodetectors
testing method
laser tracking
