High-resolution diffusing-wave spectroscopy using optimized heterodyne detection.
We show experimentally and theoretically that the use of optimized heterodyne detection in a diffusing-wave spectroscopy experiment leads to the detection of much smaller intensity autocorrelations than with conventional (either homodyne or heterodyne) setups. This enhanced resolution may be useful for the study of longtime dynamics of multiple-scattering disordered systems.
Höhler
Reinhard
R
Laboratoire de Physique des Matériaux Divisés et des Interfaces, UMR 8108, Université de Marne-la-Vallée, 5 Boulevard Descartes, 77454 Marne-la-Vallée Cedex 2, France.
Labiausse
Vincent
V
Cohen-Addad
Sylvie
S