摘要
为满足全球气候观测、定量化遥感等超高精度定标需求,研制了基于参量下转换自校准辐射基准源原理样机,设计时充分考虑原理样机模块化、轻量化与集成化.对探测器模块关键部位结构进行静力学分析,结果显示由零件形变导致探测器光敏面位置偏移21μm,探测器光敏面直径为180μm,透镜聚焦的光子光斑直径为16μm,光斑可全部进入探测器光敏面,满足设计需求.用微光相机观察各探测器前光子光斑,结果显示光斑形状规则、大小完整,用单光子探测器采集相关光子,通过符合测量绘制出八通道四对相关光子符合峰,验证了原理样机整机结构设计达到设计目标.
In order to meet the requirements of ultra-high precision calibration for global climate observation and quantitative remote sensing,a prototype system based on spontaneous parametric down-conversion self-calibration radiation reference source was developed.The design was fully considered to be modular,lightweight and integrated.The static analysis of the key part of the detector module showed that the position of the detector's photosensitive surface was shifted by 21 μm,the photosensitive surface of the detector was 180 μm,and the diameter of the photon spot of the lens was 16 μm.The spot could be fully detected,which met the design requirements.A low-light camera was used to observe the photon spots in front of each detector,the results showed that the spot shape was regular and the size was complete.The single photon detector was used to collect the relevant photons.The eight-channel four-pair correlated photon matching peaks were drawn by the coincidence measurement,and the principle was verified.The machine structure was well designed to meet the design goals.
作者
汤琪
李健军
李琛
翟文超
胡友勃
郑小兵
TANG Qi;LI Jian-jun;LI Chen;ZHAI Wen-chao;HU You-bo;ZHENG Xiao-bing(School of Environmental Science and Optoelectronic Technology,University of Science and Technology of China,Hefei 230026,China;Key Laboratory of Optical Calibration and Characterization,Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Hefei 230031,China;Bureau of Major Research and Development Programs,Chinese Academy of Sciences,Beijing 100864,China)
出处
《光子学报》
EI
CAS
CSCD
北大核心
2019年第2期28-39,共12页
Acta Photonica Sinica
基金
国家重点研发计划(No.2018YFB0504602)
国家自然科学基金(No.41805019)~~
关键词
自发参量下转换
相关光子
自校准
辐射定标
符合峰
Spontaneous parametric down-conversion
Correlated photons
Self-calibration
Radiometric calibration
Coincidence peak