基于低温辐射计的陷阱探测器红外绝对光功率响应度的定标

采用低温辐射计在1064nm波长对两个硅陷阱探测器（trap 0#和trap B）进行绝对光功率响应度定标。描述了定标方法、实验装置和数据的分析方法，提出了低温辐射计窗口的精确复位和窗口透过率的测量方案，测量得到的透过率达到0.999以上。结果表明，两个探测器绝对响应度定标的合成不确定度分别为1.457×10-4和1.458×10-4，定标结果的重复性分别达到了0.014％和0.008％。分析了测量时各项不确定度来源，对光功率响应度定标不确定度进行了评估。最后对0＃硅陷阱探测器在1064nm波长处光功率响应度的温度稳定性进行了测试研究。

Absolute infrared flux responsivity calibration of trap detectors based on cryogenic radiometer

At the wavelength of 1064nm, the absolute flux responsivities of two Si trap detectors were measured against the cryogenic radiometer. The calibration method and experiment equipment were discussed, as well as the analysis of the measurement data. A new quasi in-situ measurement scheme of Brewster windows transmittance was proposed and transmittance higher than 0.999 was obtained. Results show that the combined uncertainties of the resonsivity are 1.457×10-4 and 1.458×10-4, and the measurement repeatabilities of the two trap detectors were within 0.014% and 0.008%, respectively. The uncertainties and possible error sources during the process of measurement were analyzed and evaluated. At last, the temperature stability of flux responsivity of 0# trap detector was studied at the wavelength of 1064nm.