标题： 折射率，其色散以及四种不常见甘醇的热系数 显示英文标题

标题： Refractive Index, Its Chromatic Disper-sion, and Thermal Coefficients of Four Less Common Glycols

摘要： 我们报告了四种较少研究的乙二醇的折射率随波长和温度变化的全面测量结果：五乙二醇、六乙二醇、二丙二醇（异构体混合物）和三丙二醇。测量覆盖了390-1070 nm的光谱范围和1{\deg }C到45{\deg }C的温度范围。数据使用双极点Sellmeier方程进行建模，温度依赖性通过波长相关的热系数来捕捉。所得拟合参数以表格形式提供。实验中折射率、波长和温度的不确定性得到了严格评估，并纳入分析中。样品纯度的影响，包括残留水分含量和制造商报告的杂质，已进行评估并在不确定度估计中予以考虑。据我们所知，这是首个系统表征这些乙二醇在如此宽广的光谱和温度范围内色散和热变折射率的数据集。经过验证的拟合方程和参数适用于光学建模、材料表征及相关应用。所有原始数据均可在公开访问的存储库中获得。 显示英文摘要

摘要： We report comprehensive measurements of the refractive index as a function of wavelength and temperature for four less commonly studied glycols: pentaethylene glycol, hexaethylene glycol, dipropylene glycol (mixture of isomers), and tripropylene glycol. The measurements cover the spectral range of 390-1070 nm and temperatures from 1{\deg}C to 45{\deg}C. The data were modeled using a two-pole Sellmeier equation, with temperature dependence captured by wavelength-dependent thermal coefficients. The resulting fit parameters are provided in tabulated form. Experimental uncertainties in refractive index, wavelength, and temperature were rigorously evaluated and incorporated into the analysis. The influence of sample purity - including residual water content and manufacturer-reported impurities - was assessed and accounted for in the uncertainty estimates. To our knowledge, this is the first dataset to systematically characterize both chromatic dispersion and thermal variation of the refractive index for these glycols over such a broad spectral and temperature range. The validated fitting equations and parameters are suitable for use in optical modeling, materials characterization, and related applications. All raw data are available in a publicly accessible repository.