Used as a dopant in solid-state lasers, particularly in medical and dental laser systems due to its ability to emit near-infrared light. Employed in the production of specialized optical glasses with high refractive index and low dispersion. Applied in research for developing high-temperature superconductors and ceramic materials with unique magnetic properties. Serves as a component in radiation detection devices and scintillators for scientific instrumentation. Utilized in the creation of laser materials for portable medical devices and surgical tools.