Optical absorption spectrum of dysprosium doped zinc phosphate glass

Abstract Optical properties of Dy3+ doped zinc phosphate glasses have been investigated. In the present study glasses with the composition xZnO · (1−x)P2O5 (0.5⩽x⩽0.7) (typical value of x=0.667) containing 0.5 mol weight of Dy2O3 are prepared. The density of the glass is determined by Archimedes’s principle and the refractive index is measured on Abbe refractometer using sodium lamp as light source. The optical absorption spectra are recorded on a Hitachi U-3400 spectrophotometer in the wavelength range 200–2500 nm. Using the Judd–Ofelt (JO) theory, the intensity parameters ( Ω λ , λ=2, 4,6) have been evaluated for the glass. These intensity parameters are used to predict radiative properties that include electric (Sed) and magnetic (Smd) dipole line strengths, radiative (A) and total radiative (AT) transition probabilities, lifetimes (τR), branching ratios (βR) for the excited (6H11/2, 6F11/2, 6F9/2, 6F7/2, 6F5/2, 6F3/2) levels of these Dy3+ doped phosphate glass.