【摘要】 熔制了掺铒碲铌玻璃样品(100-X)TeO2-XNb2O5(X=5,10,15,20mol%),测试了其密度、折射率、转变温度、析晶温度、维氏机械强度、吸收光谱、荧光光谱、荧光寿命等参量。利用Judd-Ofelt和McCumber理论分别计算了铒离子强度参量Ωt(t=2,4,6)和受激发射截面σemi的大小,研究了掺铒碲铌玻璃样品光谱参量对Nb2O5成分的依赖性,并与典型的碲锌钠玻璃(75TeO2-20ZnO-5Na2O)在热学、机械强度、光谱性质和放大品行四个方面进行了比较.更多还原

【Abstract】 Er 3+ -doped (100-x)TeO-2-xNb-2O-5 (x=5,10,15,20 mol%) niobic tellurite glasses were synthesized, and their density, refractive index, glass transition temperature, crystallization temperature, Vickers microhardness, absorption spectra, fluorescence spectra and the lifetimes of Er 3+ ∶4I- 13/2 level were measured. The Judd–Ofelt strength parameters Ω-t(t=2, 4, 6) and the stimulated emission cross-section (σ- emi ) were calculated by Judd–Ofelt theory and McCumber theory, respectively. The compositional dependence of optical parameters of Er 3+ in glass samples wase investigated. The properties of Er 3+ -doped niobic tellurite glasses were compared with that of the typical 75TeO-2-20ZnO-5Na-2O (TZN) tellurite glass in aspect of thermal, mechanical, spectroscopic properties and amplification merit.更多还原