9 March 2015 Computed tomography of refractive index by low-coherence interferometry
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Abstract
We present a 3D imaging system for simultaneously imaging the distributions of refractive index and optical absorption using a transmission Fourier-domain low-coherence interferometer. The forward-scattering light travelling through a sample interferes with a reference light beam. The projections of refractive index and optical absorption within the sample are calculated from measured interference fringes. We acquire the projections at sufficient angular views and reconstruct the distributions of refractive index and optical absorption using the filter back-projection algorithm. The proposed method is experimentally verified by using a plastic tube phantom.
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Yi Wang, Zhenhe Ma, Hongxian Zhou, "Computed tomography of refractive index by low-coherence interferometry", Proc. SPIE 9330, Three-Dimensional and Multidimensional Microscopy: Image Acquisition and Processing XXII, 93301D (9 March 2015); doi: 10.1117/12.2077075; https://doi.org/10.1117/12.2077075
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