Site‐Dependent Study of the Optical Properties of Eu 3+ in Pure and Chlorine‐Doped Fluorozirconate Glasses

For the present study, the emission spectra and lifetimes of Eu 3+ in fluorozirconate and fluorochlorozirconate glasses were measured site dependently using the fluorescence line narrowing (FLN) technique. At high excitation energies, two different types of Eu 3+ sites can be distinguished in fluorozirconate glass. The introduction of chloride into this glass caused a significant effect at low excitation energy.