RELAXATION OF HIGH LYING EXCITED STATES OF Nd3+ IONS IN YAG : Nd3+ AND IN YAP : Nd3+ M. F. JOUBERT, J. C. COUDERC et B. JACQUIERJ. Phys. IV France, 01 C7 (1991) C7-385-C7-389DOI: https://doi.org/10.1051/jp4:19917100