Physical Review LettersObservation of Quantum Phase Noise in a Laser OscillatorAnthony E.. Siegman, Raymond ArrathoonPublished Apr 22, 1968• 37 citationsPublisherAbstractReceived 12 February 1968DOI:https://doi.org/10.1103/PhysRevLett.20.901©1968 American Physical SocietyDOI10.1103/physrevlett.20.901