OPTICAL CHARACTERIZATION OF Nd3+ DOPED CaF2 LAYERS GROWN BY MOLECULAR BEAM EPITAXY L. E. BAUSA, R. LEGROS et A. MUNOZ-YAGUEJ. Phys. IV France, 01 C7 (1991) C7-297-C7-301DOI: https://doi.org/10.1051/jp4:1991780
