What is it about?

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 was investigated. 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.

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Why is it important?

All the results indicate that the Er:Lu2O3 ceramics may be a potentially effective active medium for 1.5 μm mid-infrared laser application.

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This page is a summary of: Optical spectra and gain properties of Er3+:Lu2O3 ceramics for eye-safe 1.5-μm lasers, Optical Materials, February 2021, Elsevier,
DOI: 10.1016/j.optmat.2020.110785.
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