Enhancement of the laser emission efficiency of Yb:Y2O3 ceramics via multi-step sintering method fabricationGeorge Stanciu, Flavius Voicu, Catalina-Alice Brandus, Cristina Tihon, Stefania Hau, Cristina Gheorghe, Gabriela Croitoru and Lucian GheorgheEPJ Web Conf., 243 (2020) 06005DOI: https://doi.org/10.1051/epjconf/202024306005