Judd-Ofelt analysis of spectroscopic properties of Er3+ doped TeO2-BaO-ZnO glasses

UV-NIR Absorption spectra of the glass system 0.6TeO(2)-(0.35-y) BaO-0.05ZnO-yEr(2)O(3) (where y -0.01, 0.025, 0.035, 0.04 and 0.05 mol %), have been recorded in the range of 200-2500 nm. The Judd-Ofelt (J-O) parameters (Omega lambda, lambda = 2, 4, and 6) are calculated using the absorption bands of the doped glass compositions with y mol % content of Er2O3. The radiative properties of the Er3+ ions are calculated using J-O parameters. Other parameters such as; oscillator strength, radiative lifetime, transition probabilities, spectroscopic quality and branching ratio of several excited states of the Er3+ ions are calculated. All spectra were resolved using the normalized area method. Then, the emission from the lowest and upper Stark levels of the I-4(13/2) state and the gain cross-section of the laser transition level from I-4(13/2) -> I-4(15/2) are obtained. Results of the spectroscopic properties revealed that these glasses doped with Er3+ are promising candidates for optical applications. (C) 2017 Elsevier B.V. All rights reserved.