OPTICAL AND SPECTROSCOPIC PROPERTIES OF Er3+DOPED 60Sb2O3-10Na2O-30PbO GLASS

Résumé

Er³⁺doped sodium lead antimonite glass have been prepared and analyzed by (UV-Vis-NIR) absorption, near infrared luminescence and fluorescence decays. The optical band gap and refractive index were calculated from the (UV-Vis-NIR) absorption. The Judd-Ofelt theory has been applied to compute the J–O intensity parameters Ωt (t= 2, 4, 6) from absorption spectrum and determine the spectroscopic parameters such as the radiative transition probability (A_rad), radiation lifetime (τ) and branching ratio (β) of Er³⁺ transition. Experimental lifetime of the glass for the transition between ⁴I_13/2 and ⁴I_15/2   level was calculated from the photoluminescence decay curves and estimated the quantum efficiency. Absorption, emission and gain cross-section, effective band width (Δλ_eff) and gain band width of the ⁴I_13/2 ®⁴I_15/2   transition of Er³⁺ in glass are recorded and calculated. The obtained results confirm the potential of this glass in signal amplification and laser application.