Abstract
Alkaline tellurite glasses within composition of 65TeO(2)-9Nb(2)O(5)-5Li(2)O-15LiCl-5PbO-1.0La(2)O(3)xEr(2)O(3) ions doped (where x is 0, 20000, 25000 and 30000 ppm) have been prepared by the quenching melting method. Herein, parameters such as Judd-Ofelt, Omega(t) (t = 2, 4, 6) has been estimated. Transfer probabilities quality factors, magnetic and electric radiative oscillator strength fluorescence are used for a number of different excited states. Moreover, the structure of prepared glasses was investigated using Raman spectra. Physical and spectroscopic characterizations of Er3+ doped these glasses, which imply that we can fabricate them as potential candidates for optical application.