Spectroscopic investigations of Yb3+–Er3+–codoped LaLiP4O12 glasses relevant for laser applications A.-F. Obaton, J. Bernard, C. Parent, G. Le Flem, C. Labbé, P. Le Boulanger and G. BoulonEur. Phys. J. AP, 4 3 (1998) 315-321DOI: https://doi.org/10.1051/epjap:1998276
