基于声光调制技术的光电探测器响应带宽测量方法  

Measurement of response bandwidth of photoelectric detector based on acousto-optic modulation technology

作　　者：杨帆[1,2,3] 王心亮[1,2] 阮军 张首刚[1,2] YANG Fan;WANG Xin liang;RUAN Jun;ZHANG Shou gang(National Time Service Center,Chinese Academy of Sciences,Xi’an 710600,China;Key Laboratory of Time and Frequency Primary Standards,Chinese Academy of Sciences,Xi’an 710600,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院国家授时中心,西安710600 [2]中国科学院时间频率基准重点实验室,西安710600 [3]中国科学院大学,北京100049

出　　处：《时间频率学报》2019年第1期7-11,共5页Journal of Time and Frequency

基　　金：国家自然科学基金资助项目(61127901);国家重点研发计划资助项目(2016YFF0200200)

摘　　要：响应带宽是描述光电探测器频率响应特性的重要参数,它表征了光电探测器对不同频率光信号的响应能力。研究基于声光调制技术的光电探测器响应带宽测量,通过对激光功率进行调制,应用自研光电探测器对调制后的激光进行探测并记录输出波形,最后对波形数据做傅里叶频谱分析,可以确定光电探测器的响应带宽。该方法操作简单,可适用于10kHz以下各种低响应频率光电探测器。Response bandwidth is a significant parameter which is used to describe the frequency response characteristics of the photoelectric detector.It indicates the ability of photoelectric detectors to respond to various frequencies of the optical signal.Acousto-optic modulation technology is used for laser modulation,the photoelectric detector is used to detect and record the output waveforms.Finally,Fourier spectrum analysis was done on the waveform dates,and the response bandwidth of the photoelectric detector could be determined according to the spectrums.The method is simple to operate and can be applied to various low response frequency photoelectric detectors under 10 kHz.

关 键 词：响应带宽 光电探测器 声光调制 频谱分析 

分 类 号：P127.1[天文地球—天体测量]