A COMPACT, DIFFRACTION LIMITED, He FREE, HIGH REPETITION FREQUENCY NANOSECOND CO2 LASER S. MARCHETTI, S. BARTALINI, M. GIORGI et R. SIMILIJ. Phys. IV France, 01 C7 (1991) C7-765-C7-767DOI: https://doi.org/10.1051/jp4:19917205