Used in research and development of luminescent materials and optoelectronic devices due to its ability to emit light in the near-infrared region. Employed in solid-state lasers and as a dopant in optical fibers for signal amplification. Also investigated for use in scintillators that detect radiation in medical imaging and nuclear applications. Shows potential in catalytic processes and as a precursor in the synthesis of other ytterbium-containing compounds. Limited commercial use outside specialized scientific and industrial settings.