Abstract The high optical quality Er:Lu2O3 and Er,Pr:Lu2O3 crystals were grown by Floating zone method. The spectral properties of Er:Lu2O3 and Er,Pr:Lu2O3 crystals were investigated. After co-doping small concentration of Pr3+, the depopulated influence of Pr3+ to the NIR emission was much stronger than the MIR emission. The near-infrared and up-conversion fluorescence were significantly quenched. Moreover, the fluorescence lifetime of 4I13/2 abviously decreases from 4.02 ms to 1.71 ms in 7% Er, 0.05% Pr: Lu2O3 crystal, and the lifetime ratio is 1.63 with large fluorescence lifetime of 4I11/2 which is desirable lifetime ratio in these crystals. Thus, the spectral performance was significantly improved by co-doping 0.05 at.% of Pr3+. The high laser performance at 2.7 μm of 7% Er, 0.05% Pr: Lu2O3 crystal is expectable.

中文翻译：

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Er,Pr:Lu2O3 晶体的增强型 2.7 μm 连续波发射

摘要 采用浮区法生长了高光学质量的Er:Lu2O3和Er,Pr:Lu2O3晶体。研究了 Er:Lu2O3 和 Er,Pr:Lu2O3 晶体的光谱特性。在共掺杂小浓度 Pr3+ 后，Pr3+ 对 NIR 发射的人口减少的影响比 MIR 发射强得多。近红外和上转换荧光被显着淬灭。此外，在 7% Er、0.05% Pr: Lu2O3 晶体中 4I13/2 的荧光寿命明显从 4.02 ms 降低到 1.71 ms，寿命比为 1.63，4I11/2 的荧光寿命大，是这些中理想的寿命比晶体。因此，通过共掺杂 0.05 at.% 的 Pr3+ 显着改善了光谱性能。7% Er、0.05% Pr: Lu2O3 晶体在 2.7 μm 处的高激光性能是可预期的。