Laser Characteristics of Er/Yb:K-BaF-Al-Phosphate Glasses.

Er and Er/Yb-doped phosphate-based glasses have been synthesized by melt quenching technique and are characterized by absorption spectra, infrared emission, decay curves, Fourier transform infrared spectrum and up-conversion studies. From the absorption spectra, intensity parameters and radiative properties have been derived utilizing the Judd-Ofelt theory. Er-doped glass is found to have larger radiative lifetime for the laser originating from I level at 1537 nm.

Pure red upconverted and near-infrared luminescence properties of Er -doped SnO nanocrystals for lighting applications.

Tin oxide (SnO ) nanocrystalline powders doped with erbium ion (Er ) in different molar ratios (0, 3, 5, and 7 mol%) were prepared using a solid-state reaction technique. These samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), ultraviolet-visible absorption, visible upconversion, and near-infrared luminescence techniques. XRD analysis revealed the tetragonal rutile structure of SnO and the average crystallite size was about 32 nm.