Optical-Field Effects Produced by Fluctuations of the Density of Excited States

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Abstract
Optical-field fluctuations due to fluctuations of the number of active emitters are predicted and the magnitude of the effect is calculated. The results indicate an observable effect, although the conditions for observation appear not to have been met in experiments in which light fluctuations have been measured. The magnitude of the effect is capable of yielding information about the thickness of an emitting layer or the product of line width and excited-state lifetime.