Path-length distribution and path-length-resolved Doppler measurements of multiply scattered photons by use of low-coherence interferometry

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Petoukhova, Anna L. and Steenbergen, Wiendelt and Mul, Frits F.M. de (2001) Path-length distribution and path-length-resolved Doppler measurements of multiply scattered photons by use of low-coherence interferometry. Optics Letters, 26 (19). pp. 1492-1494. ISSN 0146-9592

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Abstract:We report first results of measurements by low-coherence Doppler interferometry of the path-length distribution of photons undergoing multiple scattering in a highly turbid medium. We use a Mach–Zehnder interferometer with multimode graded-index fibers and a superluminescent diode as the light source. The path-length distribution is obtained by recording of the heterodyne f luctuations that arise from the Brownian motion of particles in an Intralipid suspension as a function of the optical path length. The experimental path-length distribution is in good agreement with predictions of Monte Carlo simulations. In the heterodyne spectrum, an increase of the mean Doppler frequency with path length is observed.
Item Type:Article
Copyright:© 2001 Optical Society of America
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Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/71730
Official URL:http://dx.doi.org/10.1364/OL.26.001492
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