Abstract

After reviewing shortly the issue of localization of light we will discuss recent developments. Spatial amplitude correlations build up in a strongly scattering medium due to interference effects. Theory predicts three different kinds of correlations: short range (F1), long range (F2,) and universal (F3). These correlations have several observable consequences: enhanced backscattering and intensity fluctuations. We will discuss measurements of intensity fluctuations in three-dimensional and two-dimensional media. Both F2 and F1 have been observed separately. The results will be compared with theory.

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