LAUSR

Abstract A new series of Er3+ ions doped Oxy Chloro Boro Tellurite glasses were prepared by melt-quenching method. Various spectroscopic properties were determined from absorption, excitation and photo-luminescence spectra. The Judd-Ofelt intensity parameters Ωλ(λ=2,4,6) were estimated based on absorption spectra. A strong luminescence band was observed at 1536nm under the excitation wavelength of 522nm. The gain coefficient of 1.53μm emission was estimated to probe the utility of glasses in broad band amplification technology. Inokuti-Hirayama model was employed to decay curves, to comprehend the nature of energy transfer between erbium ions. The stimulated emission cross-sections (σsec), branching ratios (βR), quantum efficiencies (η%) and gain cross-section (σsecxτR) for Er3+ ions doped OCBT glasses were evaluated and compared with other reported glass samples. Based on the highest stimulated emission cross-section, branching ratios, quantum efficiencies and gain cross-sections, it is suggested that 1mol% of Er3+ ions doped OCBT glass is more suitable for NIR region optical device applications.