Rare Earth Doped Fluoride Fibre Lasers Using Direct-Coated Dielectric Mirrors S. Boj, F. Alard, J.-Y. Allain, H. Poignant, E. Delevaque, M. Saccoccio, Y. Aubry, D. Pureur et M. Douay J. Phys. III France, 5 3 (1995) 225-236 DOI: 10.1051/jp3:1995122