SIGNATURE WORK
CONFERENCE & EXHIBITION 2023

This SW project mainly focused on the optical property characterization of the two Yb and Cr doped YAG transparent ceramics. Specifically, the photoluminescence spectra of the Yb and Cr doped YAG ceramics have been detailly studied, including temperature-, excitation power- and excitation wavelength-dependent photoluminescence spectra. In terms of Yb-doped YAG, this work reported the emission peaks within the visible range and assigned the peaks to be intervalence transfer luminescence, Yb2+ luminescence, and impurity luminescence, respectively. In terms of the Cr-doped YAG, based on the variation of peak position with respect to the excitation wavelength of the zero-phonon line (ZPL), this work proposed that the mechanism of the ZPL emission involves a transition between different energy levels caused by the splitting of the crystal field and spin-orbit coupling. The findings in this work will be beneficial to understanding the emission behavior of the ceramic materials and implementing further applications.