NPL改进的光谱响应标准(400nm～20μm)(一)

Improved Spectral Responsivity Scales at the NPL,400 nm to 2oμm (1)

英国国家物理实验室已建立了两套光谱响应标准。用高量子效率的硅光电二级管建立400～92Onm范围内的光谱响应标准，NPL此标准的传递不确定度为0．1％。用装有半球形反射腔的热释电探测器建立了1～20μm范围内的光谱响应标准，此标准的不确定度小于1．6％。

Two spectral responsivity scales have been established at the National Physical Laboratory,UK. High quantum efficiency silicon photodiodes have been used to establish a continuous spectral responsivity scale for the spectral region from 400 nm to 920 nm. The scale can be disseminated by the NPL with an uncertainty of 0. 1 %. Pyroelectric detectors fitted with a reflecting hemispherical cavity have been used to establish a spectral responsivity scale for the spectral region from 1 μm to 20μm. This scale has an uncertainty of less than 1. 6%.