@article{LIU2020, 
author = {Ziyu LIU and Guido TOCI and Angela PIRRI and Barbara PATRIZI and Yagang FENG and Jiabei WEI and Feng WU and Zhaoxiang YANG and Matteo VANNINI and Jiang LI},
title = {Fabrication, microstructures, and optical properties of Yb:Lu2O3 laser ceramics from co-precipitated nano-powders},
year = {2020},
journal = {Journal of Advanced Ceramics},
volume = {9},
number = {6},
pages = {674-682},
keywords = {Yb:Lu2O3 transparent ceramics, co-precipitated nano-powder, spectroscopic properties, laser performance, hot isostatic pressing},
url = {https://www.sciopen.com/article/10.1007/s40145-020-0403-8},
doi = {10.1007/s40145-020-0403-8},
abstract = {The Yb:Lu2O3 precursor made up of spherical particles was synthesized through the co-precipitation method in the water/ethanol solvent. The 5 at% Yb:Lu2O3 powder is in the cubic phase after calcination at 1100 ℃ for 4 h. The powder also consists of spherical nanoparticles with the average particle and grain sizes of 96 and 49 nm, respectively. The average grain size of the pre-sintered ceramic sample is 526 nm and that of the sample by hot isostatic pressing grows to 612 nm. The 1.0 mm-thick sample has an in-line transmittance of 81.6% (theoretical value of 82.2%) at 1100 nm. The largest absorption cross-section at 976 nm is 0.96×10-20 cm2 with the emission cross-section at 1033 nm of 0.92×10-20 cm2 and the gain cross sections are calculated with the smallest population inversion parameter β of 0.059. The highest slope efficiency of 68.7% with the optical efficiency of 65.1% is obtained at 1033.3 nm in quasi-continuous wave (QCW) pumping. In the case of continuous wave (CW) pumping, the highest slope efficiency is 61.0% with the optical efficiency of 54.1%. The obtained laser performance indicates that Yb:Lu2O3 ceramics have excellent resistance to thermal load stresses, which shows great potential in high-power solid-state laser applications.}
}