Abstract
Techniques for characterizing random media are motivated in part by recent interest in important applications such as optical imaging in biological tissue. We show for the first time that the third order frequency correlation of measured speckle intensities using coherent light enables the temporal response of a random medium to be obtained. In particular, we present experimental results for a random medium in the weak scattering limit and the diffusive regime, where the field statistics are circular complex Gaussian.
© 2002 Optical Society of America
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