Synthesis, Structural and Luminescence Studies of Europium Doped Borate Glasses

Abstract

Different concentration of (0.1, 0.2, 0.3, 0.4, 0.5, 1.0 & 1.5) mol% of europium doped lead borate lithium glasses were prepared by melt quenching method. The properties of thermal, photoluminescence & structural were analyzed using DTA, FTIR and emission spectra. Emission spectra was used to evaluate the Judd-Ofelt (JO) parameters. Radiative parameters like stimulated emission cross-sections (σ_e), effective band width (∆λ_eff), transition probabilities (A), optical gain bandwidths (σ_e x ∆λ_eff), radiative lifetime (τ_rad) and optical gain (σ_e x τ_rad) values were evaluated for the transition ⁵D₀→⁷F_j (j=1, 2, 3 and 4) of Eu³⁺ ions. The outcome of transition ⁵D₀→⁷F₄ at its highest value of branching ratios and stimulated emission cross-section are evaluated with the literature. Hence we can could the prepared host glass doped with Eu³⁺ ions are good fibre amplifiers and it can be used as a red laser.