molecular laser
A gas laser which makes use of electronic, vibrational or rotational energy levels in molecules. The molecules can be excited by an electric discharge, as in the case of the N2 or CO2 laser, by chemical reactions, as in the HF or DF lasers, or by another laser, as in the CH3F far IR laser.
PAC, 1995, 67, 1913. 'Nomenclature, symbols, units, and their usage in spectrochemical analysis-XV. Laser-based molecular spectroscopy for chemical analysis - laser fundamentals (IUPAC Recommendations 1995)' on page 1920 (