Used in research and development of advanced optical materials, particularly in the production of infrared lasers and amplifiers. Plays a role in doping optical fibers for laser systems due to its favorable luminescent properties in the near-infrared range. Also investigated for use in quantum memory and photonic devices. Serves as a precursor in the synthesis of other ytterbium-containing compounds for catalysis and materials science. Its hydrate form is often preferred in laboratory settings for improved handling and solubility in polar solvents.