Abstract: Nd³⁺-doped transparent oxyfluoride glass ceramics containing CaF₂ was prepared through controlled crystallization of melt-quenched glass. The sample is characterized by DTA, XRD and FEG-ESEM. The result indicates that the main phase of crystal is CaF₂ and the crystalline particle size is 15 nm. The optical transmittance is about 78%—87% in the visible region and 84%—93% in the near-infrared region. Fluorescence measurements exhibit a stronger emission especially at 1060 nm in the glass ceramics than in the precursor glass, and a larger excited emission section value than the precursor glass, due to the incorporation of Nd³⁺ into CaF₂ during the crystallization.

Key words: Neodymium-doping, Oxyfluoride, Glass-ceramics, Transparency