Spectroscopic properties of Er3+-doped antimony oxide glass

Highlight
• As a function of Er concentration, glasses corresponding to the 60Sb2O3–20WO3–(19 − x) Na2O–1Bi2O3, xEr2O3 formula were prepared. The quantum efficiency shows that this glass could be promised for laser devices.

Spectroscopic properties of Er3+ ions have been studied in the 60Sb2O3–20WO3–19Na2O–1Bi2O3 (SWNB) glasses doped with 0.25 and 0.50 mol% Er2O3 respectively. The Judd–Ofelt parameters measured from the absorption spectra have been used to calculate the radiative life-time (τr) and the stimulated emission cross section. The low phonon energy, a reduced quenching effect and a high quantum efficiency of 90% for the 1.53 μm expected laser emission into pumping at 980 nm are in favor of promising material laser application.