Parameters Inversion of ZnS Multi-Phonon Absorption Model Based on the Transmissivities in Variable Temperature

In order to solve the difficulty of characterizing the optical constants of ZnS at high temperatures, the multiphonon absorption dielectric function model which includes temperature parameters is constructed and modified in this paper. The multi-phonon absorption parameters of ZnS have been inverted based on variable temperature infrared transmittance spectra. The variable temperature infrared transmittance spectra of ZnS have been well fitted. The temperature dependence of the dissociation energy of ZnS materials is demonstrated, and the optical constants of the ZnS material have been obtained at 25 degrees C, 100 degrees C, 200 degrees C, 300 degrees C, and 400 degrees C.