molecular laser
A @G02585@ 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 @L03459@, by chemical reactions, as in the HF or DF lasers, or by another @L03459@, as in the CH3F far IR @L03459@.
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 [Terms] [Paper]