Development of colour centre lasers for spectroscopy applications G. Baldacchini, G.P. Gallerano, D. Censi, M. Tonelli, P. Violino, U.M. Grassano, M. Meucci et A. Scacco Rev. Phys. Appl. (Paris), 18 5 (1983) 301-306 DOI: 10.1051/rphysap:01983001805030100