Lasing and refractive indices of nanocrystalline ceramics of cubic Yttrium Oxide Y 2 O 3 doped with Nd 3+ and Yb 3+ ions

A continuous-wave lasing at 1 μm was excited by the radiation of semiconductor laser diodes at room temperature in nanocrystalline ceramics Y 2 O 3 doped with Nd 3+ and Yb 3+ ions. The refractive indices of the undoped nanocrystalline Y 2 O 3 ceramics were measured in the wavelength range 0.4–9 μm.