A tunable fiber laser for application to helium optically pumped magnetometers A. LE GARREC, J.M. LÉGER, D. PUREUR, M. DOUAY, P. BERNAGE, P. NIAY and E. DELEVAQUE J. Phys. IV France, 04 C4 (1994) C4-695-C4-698 DOI: 10.1051/jp4:19944183