DIFFRACTION TOMOGRAPHY ADAPTED TO TECHNICAL APPLICATIONS

Edgar Scherleitner, Bernhard G. Zagar

Abstract

An approach of a diffuse optical tomography system using NIR wavelengths will be presented to image heterogeneities in various kinds of turbid volumes, such as a wide range of biological substances, many translucent technical substances like plastics, foams and fluids.
A light intensity modulation technique is employed to achieve imaging of the absorption and additionally even the scattering properties of superior resolution than usual transillumination images of technical process monitoring. Since the understanding of photon migration in strongly scattering media has improved much lately, it is now possible to utilize inversion methods to solve for optical parameters out of a series of measurements. The discretized volume of the probe and the modeling of the light propagation by the diffusion equation give a linear system of equations, which is solved by singular value decomposition.

Keywords

diffraction, tomography, nir

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PWC-2003-TC2-015.pdf

DOI

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IMEKO TC

TC2 - Photonics

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