We propose optical path-length spectroscopy as a new approach to obtaining information from media that exhibit multiple light scattering. By using a backscattering technique based on low-coherence interferometry, we are able to determine the optical path-length distribution for light reflected from a random medium and to infer the value of the transport mean free path. We illustrate how a diffusion approximation model leads to a satisfactory description of depth-resolved profiles of the backscattered intensity and discuss potential applications of this technique.
|Original language||English (US)|
|Number of pages||3|
|State||Published - Apr 1 1999|
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics