Optical and fluorescence properties of Dy2O3-doped P2O5 + K2O + MgO + Al2O3 and P2O5 + K2O + MgO + MgF2 + Al2O3 glasses have been investigated at room temperature. From the optical absorption measurements and using Judd-Ofelt (JO) theory, JO parameters have been obtained which are used to predict the radiative properties of 4F9/2 level of Dy3+ ion. A strong yellow (Y) and blue (B) emissions corresponding to 4F9/2 → 6H13/2 and 4F9/2 → 6H15/2 transitions of Dy3+ ions were observed in these glasses. A good correlation between the intensity ratio (Y/B) and Ω6/Ω2 was identified. The CIE colour coordinates were evaluated from the emission spectra to simulate white light emission from the title glasses. Fluorescence decay curves of the 4F9/2 → 6H13/2 transition have been measured and σem τexp reveals the possibility of using these glasses for yellow laser. © 2011 Published by Elsevier B.V.
Kumar, K. U., Rao, C. S., Jayasankar, C. K., Babu, S. S., Lucio, J. L., Vallejo H., M. A., & Gamez, M. A. M. (2011). Optical properties of Dy3+-doped P2O5 - K2O - MgO/MgF2 - Al2O3 glasses. In Physics Procedia (Vol. 13, pp. 70–73). Elsevier B.V. https://doi.org/10.1016/j.phpro.2011.02.017