A @G02585@ which is pumped using energy transfer from other atoms or molecules. Examples are the helium-neon (HeNe
) the @C01338@.
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 1919 [Terms