Effect of hot pressing pressure on the microstructure and laser performance of Yb:CaF2 transparent ceramics. - Li, Xiang; Guo, Lihao; Hu, Chen; Wu, Junlin; Toci, Guido; Pirri, Angela; Patrizi, Barbara; Vannini, Matteo; Liu, Qiang; Li, Jiang (Optical Materials, 2025)