“We should note that this latter type of shift was successfully amplified to a considerable extent by Russian physicists using the intense light of a ruby laser whose wavelength is close to that of a transition of the potassium atom.” ShouldLightTypeNotesIntenseLatterTransitionAtomsPhysicistRubiesLasersWavelengthPotassium Book:Oeuvre scientifique: 1956-1983 Source: Oeuvre scientifique: 1956-1983
