Author : V. Poli Reddy, T. G. V. M. Rao, A. Rupesh Kumar, K. Neeraja, K. Kalyan chakravarthi and M. Rami Reddy

Ho3+ ions doped sodium zirconium silicate glasses have been prepared by melt quenching technique and characterized by XRD, optical absorption, luminescence, FTIR and Raman spectral techniques. The XRD spectra of the glass samples reveal that these glasses have amorphous nature. In the Optical investigations, the Judd–Oflet theory could successfully applied, the value of Ω2 is observed to be highest which suggests that highest covalent environment is present around Ho3+ ions. Various radiative properties such as transition probability, branching ratio βr and radiative life time τR are estimated. The branching ratio for 5F5→5I8 is found to be maximum (~50%) and it may be considered as a possible laser transitions. Structural properties reveals that the glass network becomes depolymerized with introduce of Ho3+ ions in the glass matrix.

Keywords: Sodium zirconium silicate glasses, Ho3+ ions, optical investigations, radiative properties

Article published in International Journal of Current  Engineering  and Technology, Vol.4,No.2 (April- 2014)