Spectroscopy of Yb3+-doped multicomponent alkaline earth metal fluorides for ultrafast lasersSimone Normani, Pavel Loiko, Zhen Zhang, Fengkai Ma, Dapeng Jiang, Liangbi Su, Alain Braud, Valentin Petrov and Weidong ChenEPJ Web Conf., 335 (2025) 08022DOI: https://doi.org/10.1051/epjconf/202533508022