TUNABLE DIODE LASER STUDIES OF COLLISIONLESS INFRARED EXCITATION OF SF6 AND NH3 MOLECULES Yu.A. KURITSYN, G.N. MAKAROV, V.R. MIRONENKO et I. PAK J. Phys. IV France, 01 C7 (1991) C7-467-C7-470 DOI: 10.1051/jp4:19917124