Effect of Bi2O3 on JO parameters and spectroscopic properties of Er3+ incorporated sodiumfluoroborate glasses for amplifier applications

This work delivers effect of bismuth on the luminescence and gain characteristics of Er3+ ions incorporated sodiumfluoroborate glasses prepared through melt quenching method. Employing the absorption spectral measurements, Judd-Ofelt intensity parameters (Omega(2),Omega(4),Omega(6)) were determined and are used to compute various luminescence radiative properties. From visible emission profile studies, stimulated emission cross-section, CIE color coordinate and Color Correlated Temperature values pertaining to the titled glasses are evaluated. Using Mc-Cumber theory, absorption cross-section (sigma(a)), emission cross-section (sigma(e)), gain coefficient values for NIR I-4(13/2)-> I-4(15)/2 transition are evaluated and compared with other reported glasses. Of all the present glasses, 40BiBNCE glass exhibit higher sigma(a) (66.49 x 10(-22) cm(2)), sigma(e) (75.95 x 10(-22) cm(2)) and optimum value of figure of merit (402.54 x 10(-28) cm(3) ). Based on the visible and NIR luminescence features, 40BiBNCE glass can be suggested as a potential candidate for the fabrication of solid state lasers, gain medium for 1.53 mu m optical amplifier applications.