掺铒高硅氧玻璃光谱性质的研究

应用Judd-Oflet理论计算了新型掺铒高硅氧玻璃中铒离子的强度参量Ω_t(t=2,4,6)，Ω₂=8.15×10^-20，Ω₄=1.43×10^-20，Ω₆=1.22×10^-20，相比于其他氧化物玻璃，表现出较大的Ω_2,6值，反映了铒离子周围的近邻结构不对称性和Er-O键的离子键成分较高.利用McCumber理论计算得到了能级^{关键词： 掺铒高硅氧玻璃 Judd-Ofelt理论 量子效率}

Specltal properties of Er3+ doped high silica glass

The Judd-Ofelt intensity parameter Ω_t of a novel Er³⁺ doped high silica glass was calculated. The large values of Ω_2,6 (Ω₂=8.15×10^-20,Ω₆=1.22×10^-20) indicate that the local structure of Er³⁺ has higher asymmetry and lower covalency than other oxide glasses. McCumber theory was used to calculate the stimulated emission cross section of ⁴I_13/2→⁴I_15/2 transition, the result was 0.51pm². Despite the Er³⁺-doped concentration in high silica glass being about ten times greater than that in silica fiber, its fluorescence lifetime and quantum efficiency were 6.0ms and 66.0%， respectively. This novel Er³⁺-doped glass can be used in optical amplification and microchip laser.