Quantum efficiency of 1.5 µm emission of Er3+ in ZBLAN and BIGaZYT fluoride glasses and in silica glass obtained by photoacoustic spectroscopy A. Mendioroz, R. Balda, J. Fernández et F. AuzelJ. Phys. IV France, 04 C7 (1994) C7-397-C7-400DOI: https://doi.org/10.1051/jp4:1994793