Quantum efficiency calibration of opto-electronic detector by means of correlated photons method

被引：0
|
作者：
李健军 [1 ]
郑小兵 [1 ]
卢云君 [1 ]
邹鹏 [1 ]
张伟 [1 ]
机构：
[1] Remote Sensing Laboratory,Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Hefei 230031
来源：
Chinese Optics Letters | 2008年 / 07期
基金：
中国国家自然科学基金;
关键词：
Quantum efficiency calibration of opto-electronic detector by means of correlated photons method; FWHM;
D O I：
暂无
中图分类号：
O431.2 [量子光学];
学科分类号：
070207 ; 0803 ;
摘要：
A new calibration method of detectors can be realized by using correlated photons generated in spontaneous parametric down-conversion (SPDC) effect of nonlinear crystal.An absolute calibration system of detector quantum efficiency is performed.And its principle and experimental setup are introduced.A continuous- wave (CW) ultraviolet (351 nm),diode-pumped,frequency-doubled,and solid-state laser is used to pump BBO crystal.The quantum efficiencies of the photomultiplier at 633,702,and 789 nm are measured respectively.The coincidence peaks are observed using coincidence circuit.Some measurement factors including the filter bandwidth of trigger channel,the detector position alignment and polarization of the pump light are analyzed.The uncertainties of this calibration method are also analyzed,and the relative uncertainties of total calibration are less than 5.8%.The accuracy of this method could be improved in the future.
引用
收藏
页码：472 / 475
页数：4
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