NaHoF4

Sodium holmium fluoride (NaHoF₄) is a rare-earth fluoride ceramic compound that belongs to the family of lanthanide-doped fluoride materials, primarily of research interest rather than established industrial production. It is investigated for photonic and luminescent applications, particularly as a host material for upconversion processes where holmium ions convert near-infrared radiation into visible or ultraviolet light under excitation. This material is notable in the optical and photonics research community for potential use in solid-state lasers, medical imaging, and quantum dot technologies, where rare-earth fluoride ceramics offer superior transparency and thermal stability compared to oxide-based alternatives.