Name: erbium oxide, Erbium Oxide, CAS No. 12061-16-4. Physical Properties: Molecular weight 382, ??Er2O3 pink powder, density 8.64, melting point 2378 ℃. Boiling point 3000 ℃. Insoluble in water, soluble in acid. Specifications: Applications: (a) in the need to enlarge the optical signal wavelength of 1550nm telecommunications networks, erbium-doped fiber amplifier is essential optical devices, currently erbium-doped silica fiber amplifier has been commercialized, fiber optic communications rapid development, will open up new areas of application of erbium. (2) erbium-doped laser crystals and its output 1730nm and 1550nm laser laser eye safety to human, atmospheric transmission performance is better, the smoke of the battlefield penetration ability, confidentiality, and not by the enemy detection, exposure military contrast targets larger military use has been made of the human eye-safe laser rangefinder portable. (3) Er3 + was added to the glass material can be made of rare earth glass laser, output pulse energy is the maximum output power of up to solid-state laser material. (4) Er3 + upconversion laser can be done rare earth ion activated materials. (5) In addition, can also be applied to glasses doped glass, crystallized glass of the bleaching and coloring.