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Optical spectra and gain properties of Er3+:Lu2O3 ceramics for eye-safe 1.5-μm lasers
Optical Materials ( IF 3.8 ) Pub Date : 2021-01-09 , DOI: 10.1016/j.optmat.2020.110785
M. Chaika , S. Balabanov , D. Permin

The Er3+-doped Lu2O3 ceramics were successfully prepared by high temperature vacuum sintering of nanopowders using lantana as a sintering additive. The absorption coefficient and absorption cross-section of Er3+ ions in Lu2O3 ceramics at 980 nm were 3.3 cm−1 and 1.65·10−21 cm2, respectively. The emission cross-section at 1534 nm was calculated to be 9.1·10−21 cm2. The fluorescence decay lifetime of 4I13/2 energy level was 7.2 ± 0.2 ms. The positive gain cross-section at 1534 nm can be achieved if the inversion ratio P is 0.5 or higher. All results show that Er:Lu2O3 ceramics can be used as potential active medium for mid-infrared lasers operated at 1.5 μm.



中文翻译:

适用于人眼安全的1.5μm激光器的Er 3+:Lu 2 O 3陶瓷的光谱和增益特性

以马Er丹为烧结助剂,对纳米粉体进行了高温真空烧结,成功制备了掺Er 3+的Lu 2 O 3陶瓷。Lu 3 O 3陶瓷在980 nm处的Er 3+离子的吸收系数和吸收截面分别为3.3 cm -1和1.65·10 -21  cm 2。计算出在1534nm处的发射截面为9.1·10 -21  cm 2。荧光衰减寿命为4 I 13/2能级为7.2±0.2毫秒。如果反转比P为0.5以上,则可以得到1534nm处的正增益截面。所有结果表明,Er:Lu 2 O 3陶瓷可用作在1.5μm下工作的中红外激光的潜在活性介质。

更新日期:2021-01-10
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