Abstract
The effects of selective components M2O3 (M=Al, Ga) on local structure, thermal and spectroscopic properties of lead phosphate glasses doped with Er3+ ions were systematically investigated. It was found that the both oxide modifiers (Al2O3 and Ga2O3) may be classified as crystallizing agents for lead phosphate glass host. The glass transition temperatures for glass samples modified by M2O3 were determined using differential scanning calorimetry. The X-ray diffraction analysis was used in order to verify the nature of lead phosphate - based systems. Near-infrared luminescence spectra corresponding to 4I13/2→4I15/2 transition of erbium ions were measured. The luminescence spectra of Er3+-doped lead phosphate glass are presented and discussed in relation to the impact of crystallizing agents M2O3 (M=Al, Ga). Luminescence lifetimes for the upper 4I13/2 laser state of Er3+ ions were also evaluated.
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