Abstract
Lead silicate glass samples with varying lead oxide content were prepared in this study, and their luminescent properties were examined and analyzed. It was found that with increasing lead oxide content, the maximum phonon energies of the glass samples decreased, while their spontaneous transition probabilities first increased and then decreased. The influence of the spontaneous transition rate, A10, and the multi-phonon relaxation rate, W10, on the sample luminescent properties was analyzed using rate equations. As a result, it was found that with increasing lead oxide content, W10/A10 decreased, while the quantum efficiency increased. Thus, the luminescent intensity at ∼2μm increased in the glass samples with increased lead oxide content. The high luminescent intensity and long lifetime indicate that silicate glasses containing high levels of lead oxide could potentially be used in ∼2μm lasers.
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