不同波长泵浦的掺铒Al_2O_3薄膜光波导1.53μm 荧光特性

1.53 μm Photoluminescence Characterization Pumping at Different Wavelengths in Er^(3+)-doped Al_2O_3 Film Waveguide

本文通过分析铒的能级结构 ,考虑了合作上转换、激发态吸收及交叉弛豫等上转换机制 ,给出了掺铒 (Er3+ ) Al2 O3薄膜光波导在 1480 nm、980 nm和 82 0 nm3种泵浦波长下的速率方程 ,通过求稳态解 ,分析了 3种波长泵浦时发射的 1.5 3μm荧光特性以及合作上转换和激发态吸收对荧光的影响。结果表明利用 980 nm波长泵浦时可得到相对较强的 1.5 3μm荧光 ,高泵浦强度时激发态吸收对荧光影响较大 ,而在高掺 (Er3+ )

Rate equations are given at different pumping wavelengths (1480 nm, 980 nm, 820 nm). Both cooperative upconversion (CUC) and excited state absorption (ESA) are considered. We compare 1.53 μm Photoluminescence characterization of Er3+ and analyze the effect of CUC and ESA to the Photoluminescence. The results show that the effect of ESA is remarkable at high pumping intensity and CUC is dominant at high Er3+ concentration.