Spatial correlations of the spontaneous decay rate as a probe of dense and correlated disordered materials
ESPCI Paris, PSL Research University, CNRS, Institut Langevin, 1 rue Jussieu, 75005 Paris, France
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Received: 31 August 2016
Revised: 20 January 2017
Published online: 25 May 2017
We study theoretically and numerically a new kind of spatial correlation for waves in disordered media. We define CΓ as the correlation function of the fluorescent decay rate of an emitter at two different positions inside the medium. We show that the amplitude and the width of CΓ provide decoupled information on the structural correlation of the disordered medium and on the local environment of the emitter. This result may stimulate the emergence of new imaging and sensing modalities in complex media.
© The Author(s) 2017
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