Effect of the doping level on the 2.8-µm laser performance of Er3+:CaF2 crystalsVenkatesan Jambunathan, Pavel Loiko, Simone Normani, Liza Basyrova, Abdelmjid Benayad, Alain Braud, Ammar Hideur and Patrice CamyEPJ Web Conf., 307 (2024) 04042DOI: https://doi.org/10.1051/epjconf/202430704042