基于稀土氧化物反射率的近红外波长标准。

Victor R Weidner, Patricia Y Barnes, Kenneth L Eckerle
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引用次数: 19

摘要

本工作描述了用于制备和分析由三种稀土氧化物组成的反射波长标准的技术。氧化镝(Dy2O3)、氧化铒(Er2O3)和氧化钬(Ho2O3)的混合物提供了具有近红外反射光谱的压制粉末样品,其特征在于在700至2000nm的波长范围内具有许多离散的吸收最小值。这项活动的目的是开发一种波长标准,以提高近红外反射率测量的准确性。分析了光谱分辨率和温度变化对稀土氧化物混合物反射率最小值的影响。分析了与影响测量和反射率最小值位置确定的各种参数相关的不确定性。据信,这些反射率最小值位置的总体不确定度不超过±1 nm。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A Wavelength Standard for the Near Infrared Based on the Reflectance Of Rare-Earth Oxides.

This work describes the techniques used to prepare and analyze a reflectance wavelength standard composed of three rare-earth oxides. A mixture of dysprosium oxide (Dy2O3), erbium oxide (Er2O3), and holmium oxide (Ho2O3) provides a pressed powder specimen exhibiting a near infrared reflectance spectrum characterized by many discrete absorption minima in the wavelength range 700 to 2000 nm. The object of this activity was to develop a wavelength standard for improving the accuracy of reflectance measurements in the near infrared. The reflectance minima of the rare-earth oxide mixture was analyzed for the effects of varying spectral resolution and temperature. The uncertainties associated with the various parameters affecting the measurements and the determination of the location of the reflectance minima have been analyzed. The overall uncertainty in the location of these reflectance minima is believed not to exceed ± 1 nm.

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