Pure YAG single crystal was optically characterized in the wide spectral range (from far IR to vacuum UV) by applying the universal dispersion model. Data obtained from a broad range of characterization instruments and methods was simultaneously processed using least-square method and the result were compared with literature findings. The universal dispersion model describes individual elementary electron and phonon excitations in materials as separate contributions. For the first time recorded, an asymmetric Voigt peak approximation was used for modeling the contribution of one-phonon absorption in crystalline material. The optical constants are presented both graphically and in detailed dispersion parameters sets.

中文翻译：

---

通过通用色散模型对钇铝石榴石 (YAG) 单晶进行宽光谱范围光学表征

通过应用通用色散模型在宽光谱范围（从远红外到真空紫外）中对纯 YAG 单晶进行了光学表征。使用最小二乘法同时处理从各种表征仪器和方法获得的数据，并将结果与​​文献结果进行比较。通用色散模型将材料中的单个基本电子和声子激发描述为单独的贡献。第一次记录，不对称 Voigt 峰值近似用于模拟晶体材料中单声子吸收的贡献。光学常数以图形和详细的色散参数组的形式呈现。