计量学报2024，Vol.45Issue(8)：1089-1095,7.DOI:10.3969/j.issn.1000-1158.2024.08.01
微弱光探测器光谱响应测量装置
Low Light Level Spectral Responsivity Measurement System
摘要
Abstract
To meet the spectral responsivity calibration requirements of photon counting detectors,a low light level spectral responsivity measurement system is established.The feature of this system is that it can achieve spectral comparison measurement at pW monochromatic light power level.An adjustable luminance source is designed,and it is tightly coupled with the dispersion subtractive double grating monochromator to achieve power variable monochromatic light output with six orders,which can be applied to the linear working range of different photon detectors,covering the wavelength range 330～1 100 nm.The light-tight designation of the light path enables the system to work under normal lighting conditions,reducing the experimental environment requirements.Based on a standard detector integrated with fA grade current amplifier,the spectral responsivity measurement of the photon detectors at 1×106 photons/s count rate level is achieved.The controlling and data acquisition software are developed using LabView platform,which realizes the whole process of measurement automation.The characteristics experiment of the system has been carried out,and the relative spectral responsivity of photon detector are calibrated in the wavelength range from 330～1 100 nm with relative expanded uncertainty is(2.5～3.8)％,k=2.关键词
光学计量/光谱响应度/光谱比较/微弱光测量/光子计数/不确定度Key words
optical measurement/spectral responsivity/spectral comparison/low light level measurement/photon counting/uncertainty分类
通用工业技术引用本文复制引用
吕亮,罗宇鹏,姜晓梅,林晓峰,庞博文..微弱光探测器光谱响应测量装置[J].计量学报,2024,45(8):1089-1095,7.基金项目
国家重点研发计划(2016YFF0200303) （2016YFF0200303）
