Path length resolved Doppler measurements of multiple scattered photons in turbid media for various absorptions using phase modulated low-coherence interferometry

Babu Varghese; Vinayakrishnan Rajan; Ton G. Van Leeuwen; Wiendelt Steenbergen

doi:10.1117/12.661618

14 April 2006 Path length resolved Doppler measurements of multiple scattered photons in turbid media for various absorptions using phase modulated low-coherence interferometry

Babu Varghese, Vinayakrishnan Rajan, Ton G. Van Leeuwen, Wiendelt Steenbergen

Author Affiliations +

Proceedings Volume 6191, Biophotonics and New Therapy Frontiers; 619119 (2006) https://doi.org/10.1117/12.661618
Event: SPIE Photonics Europe, 2006, Strasbourg, France

Abstract

We report the development of non-invasive, path length resolved Doppler measurements of the multiply scattered light in turbid media, for different absorptions using phase modulated Mach-Zehnder low coherence interferometer, with separate fibers for illumination and detection. A Doppler broadened phase modulation interference peak is observed that shows an increase in the average Doppler shift with optical path length, independent of absorption. The estimated path length distributions indicate suppression and narrowing for increasing absorption and can be related by Lambert-Beer's law.

Citation Download Citation

Babu Varghese, Vinayakrishnan Rajan, Ton G. Van Leeuwen, and Wiendelt Steenbergen "Path length resolved Doppler measurements of multiple scattered photons in turbid media for various absorptions using phase modulated low-coherence interferometry", Proc. SPIE 6191, Biophotonics and New Therapy Frontiers, 619119 (14 April 2006); https://doi.org/10.1117/12.661618

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