Matrix effect on fluorescent properties of Ce3+ in fluorophosphate and fluoride glasses

Fluorescence spectra of AlF 3 and/or ZrF 4 based BaF 2 -CaF 2 -AlF 3 -X(X=P 2 O 5 , YF 3 , LaF 3 , ZrF 4 , InF 3 , and PbF 2 : BCA X), BaF 2 -CaF 2 -YF 3 -AlF 3 -ZrF 4 (BCYA-Zr), and ZrF 4 -BaF 2 -LaF 3 -AlF 3 -NaF (ZBLAN) glasses doped with 0.1 cat% CeF 3 melted under N2 are measured. The effect of P 2 O 5 , YF 3 , LaF 3 , ZrF 4 , InF 3 , and PbF 2 on the relative fluorescence intensities of Ce 3 + in fluorophosphate and fluoride glasses is reported The relative fluorescence intensities of Ce 3 + in the ultraviolet region increased with decreasing concentrations of P 2 O 5 , YF 3 , or ZrF 4 in BCA P, BCA Y, and BCYA-Zr glasses, respectively. The relative fluorescence intensities of Ce 3 + increased for different dopant (5 cat%) in the order PbF 2 , -InF 3 , -ZrF 4 , -LaF 3 , -P 2 O 5 , -YF 3 in BCA glasses. The BCA-5Y sample exhibited the highest relative fluorescence intensity of Ce 3 + in this study; on the contrary, the ZBLAN sample the lowest intensity. The compositional dependence of the relative fluorescence intensity of Ce 3 + is discussed in terms of excited state absorption (ESA) from the 5d' excited state of Ce 3 + to the conduction hand of matrix glass and redox reaction of Ce 3 + -Ce 4 + . The matrix effect on the relative fluorescence intensity of Ce 3 + can he explained by the synergetic effect of the probability of ESA and the stability of Ce 3 + .