A pulsed source of coherent radiation emitting at 578.2 nm and 510.5 nm from excited copper atoms.
See: gas lasers, laser
Source:
PAC, 1996, 68, 2223. 'Glossary of terms used in photochemistry (IUPAC Recommendations 1996)' on page 2234 (https://doi.org/10.1351/pac199668122223)