Centro de Física das Universidades do Minho e do Porto (CF-UM-UP), Laboratório de Física para Materiais e Tecnologias Emergentes (LaPMET) and Departamento de Física, 56059Universidade do Minho, Braga, Portugal.
Appl Spectrosc. 2023 Feb;77(2):178-186. doi: 10.1177/00037028221128813. Epub 2022 Oct 5.
Comprehensive modeling of non-polarized infrared attenuated total reflection spectrum based on Fresnel equations and wavenumber-dependent dielectric function models of isotropic materials is shown to be a suitable and easy methodology to retrieve optical functions. The scheme is completely general and can be used even for strong dispersion and absorption resonances. Attenuated total reflection spectra in liquid water, measured in the spectral region 100-4400 cm with diamond and germanium as internal reflection elements, were used to illustrate and evaluate the method. The refractive index of water computed from the dispersion analysis is critically compared with literature data.
基于菲涅耳方程和各向同性材料的波数相关介电函数模型，对非偏振红外衰减全反射光谱进行综合建模，是一种适用于获取光学功能的简单方法。该方案完全通用，即使在强色散和吸收共振的情况下也可以使用。利用金刚石和锗作为内部反射元件，在 100-4400cm 的光谱范围内测量液态水中的衰减全反射光谱，以说明和评估该方法。通过色散分析计算得到的水的折射率与文献数据进行了严格比较。
