Optical and physical properties of Er3+-doped oxy-fluoride tellurite glasses

• Published in: Optical materials 2011-01, Vol.33 (3), p.389-396
• Main Authors: Chillcce, E.F., Mazali, I.O., Alves, O.L., Barbosa, L.C.
• Format: Article
• Language: English
• Subjects: Erbium-ion emission cross section properties; Optical and physical properties; Oxy-fluoride tellurite glass; Rayleigh scattering loss; Thermal stability
• ISSN: 0925-3467; 1873-1252
• DOI: 10.1016/j.optmat.2010.09.027

In this manuscript we present the effects of ZnF2 concentration on the optical and physical properties of Er3+-doped oxy-fluoride tellurite glasses (7500ppm Er2O3-(80−x)TeO2-xZnF2-20ZnO, where x=5, 10, 15, 20, 25 and 30mol%). In general, as the concentration of ZnF2 increases: (i) the thermal stability, the optical transparency window, and the lifetime of the 4I13/2 level increase; (ii) the density, the linear refractive index, the Rayleigh scattering loss, and the OH− ion concentration decrease; and (iii) the Er3+ ion emission cross section spectrum is quenched and the bandwidth is reduced. The 4I13/2 level lifetime increase may be associated with the luminescence re-absorption and the radiative transition (4S3/2→4I13/2) processes, since both processes may contribute to the 4I13/2 level population. The Er3+ ion emission cross section spectrum (at around 1550nm) of oxy-fluoride tellurite glass containing 30mol% of ZnF2 was very similar to those of Fluoride glasses.