Physical Review LettersCoherent Light Amplification in Optically Pumped Cs VaporStephen F. Jacobs, G. Gould, P. RabinowitzPublished Dec 1, 1961• 84 citationsPublisherAbstractReceived 11 September 1961DOI:https://doi.org/10.1103/PhysRevLett.7.415©1961 American Physical SocietyDOI10.1103/physrevlett.7.415