用高温熔融冷淬法制备Tm3+离子掺杂75TeO2-20ZnO-5La2O3碲酸盐玻璃,运用差示扫描量热仪(DSC)分析了玻璃样品的热稳定性,结果表明样品均具有良好的热稳定性.根据紫外-可见-近红外分光光度计测量得到的玻璃吸收光谱,运用Judd-Ofelt理论,计算了Tm3+离子在碲酸盐玻璃中的Judd-Ofelt强度参数、自发辐射概率A、荧光分支比β和辐射寿命ΤR等光谱参数.当掺杂浓度为0.8mol％时,玻璃热稳定性好,3H4的荧光寿命最长,为0.285ms,有望成为一种理想的S波段宽带光纤放大器用基质材料.
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