paper

Mesoscopic Cooperative Emission From a Disordered System

arXiv:cond-mat/9903255 · doi:10.1103/PhysRevB.61.13266

Abstract

We study theoretically the cooperative light emission from a system of classical oscillators confined within a volume with spatial scale, , much smaller than the radiation wavelength, . We assume that the oscillators frequencies are randomly distributed around a central frequency, , with some characteristic width, . In the absence of disorder, that is , the cooperative emission spectrum is composed of a narrow subradiant peak superimposed on a wide superradiant band. When , we demonstrate that if is large enough, the subradiant peak is not simply broadened by the disorder but rather splits into a system of random narrow peaks. We estimate the spectral width of these peaks as a function of , and . We also estimate the amplitude of this mesoscopic structure in the emission spectrum.

25 pages including 6 figures

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