Wide spectral range optical characterization of yttrium aluminum garnet (YAG) single crystal by the universal dispersion model

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. (c) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

Automated summary

The optical characterization of YAG single crystal was conducted in a wide spectral range using the universal dispersion model. Data from various characterization instruments and methods was processed simultaneously and compared with literature findings. The study presented optical constants both graphically and in detailed dispersion parameters sets, showcasing the use of an asymmetric Voigt peak approximation for modeling one-phonon absorption in crystalline material.