RbYF2

RbYF₂ is a rare-earth fluoride ceramic compound combining rubidium and yttrium fluoride, belonging to the family of inorganic fluoride ceramics with a tysonite-type crystal structure. This material is primarily of research and specialized optical interest, used in photonic applications such as solid-state laser hosts and optical fiber components where its fluoride matrix enables efficient rare-earth ion doping. Engineers select fluoride ceramics like RbYF₂ over traditional oxide ceramics when transparent, stable, high-refractive-index optical media are required, particularly in UV-to-IR wavelength ranges where they outperform alternatives.