X-Ray Computed Tomography using Partially Coherent Fresnel Diffraction with Application to an Optical Fiber

Published

January 18, 2021

Author(s)

Zachary H. Levine, Edward Garboczi, Adele Peskin, Axel A. Ekman, Elisabeth Mansfield, Jason Holm

Abstract

An algorithm for partially coherent x-ray computed tomography including Fresnel diffraction is developed and applied to an optical fiber. The computing time is a few times worse than the projective counterpart. A code using the algorithm is used to reconstruct a tilt series acquired at the 1$\mu$m scale of a graded-index optical fiber with projections and diffraction, and using maximum likelihood and a Bayesian method due to Bouman and Sauer. Including Fresnel diffraction removes some reconstruction artifacts. The use of the Bayesian prior removes others.

Citation

Optics Express

Volume

29

Issue

2

Pub Type

Journals

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DOI Link

Keywords

optical fiber , diffraction tomography , iterative reconstruction , maximum likelihood , Bayesian

Optical physics and communications and Image and signal processing

Citation

Levine, Z. , Garboczi, E. , Peskin, A. , Ekman, A. , Mansfield, E. and Holm, J. (2021), X-Ray Computed Tomography using Partially Coherent Fresnel Diffraction with Application to an Optical Fiber, Optics Express, [online], https://doi.org/10.1364/OE.414398 (Accessed July 24, 2021)