Measuring distance through turbid media: a simple frequency domain approach

A. L. Dayton; N. Choudhury; S. A. Prahl

doi:10.1117/12.842682

26 February 2010 Measuring distance through turbid media: a simple frequency domain approach

A. L. Dayton, N. Choudhury, S. A. Prahl

Proceedings Volume 7573, Biomedical Applications of Light Scattering IV; 757304 (2010) https://doi.org/10.1117/12.842682
Event: SPIE BiOS, 2010, San Francisco, California, United States

Abstract

In both industry and medicine there is no optical technique to measure distance through light scattering media. Such a technique may be useful for localizing embedded structures, or may be a non-contact method of measuring turbid media. The limits of a frequency domain based technique were explored in three polyurethane optical phantoms. We have demonstrated a simple method to measure the distance between an intensity modulated light source and detector in turbid media based on the proportionality of the phase lag to the distance. The limits of the technique were evident for distances less than 5 mm, particularly when μ¹_s <0.1mm^-1 and distances greater than 55mm for the phantoms studied. This method may prove useful in industry and medicine as a non destructive way measure distance through light scattering media.

Citation Download Citation

A. L. Dayton, N. Choudhury, and S. A. Prahl "Measuring distance through turbid media: a simple frequency domain approach", Proc. SPIE 7573, Biomedical Applications of Light Scattering IV, 757304 (26 February 2010); https://doi.org/10.1117/12.842682

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