Abstract
PbO-M2O3(M2O3 =Al2O3, Sb2O3 and Bi2O3)-WO3-B2O3:Sm2O3 glasses are synthesized by the traditional method of melt-quenching. The glassy nature and glass structural units are characterized by XRD and FTIR studies respectively. The Judd–Ofelt theory is successfully applied to absorption and emission transitions of Sm3+ ions. The values of Ωλ have shown the following order: Ω4 > Ω6 > Ω2, which confirm the covalent nature of Sm-O bonds and excellence rigidity of the samples. Radiative properties of Sm3+ ions viz., branching ratio (βr), experimental life time (τexp), quantum efficiency (η) and rate of non-radiative decay (WNR) are evaluated. The glass containing Bi2O3 shows good deed of host environment around Sm3+ ions for possible orange-red laser transition 4G5/2 → 6H7/2 (≈ 600 nm).
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