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arXiv · 1808.02109

Direct 3D Tomographic Reconstruction and Phase-Retrieval of Far-Field Coherent Diffraction Patterns

T. Ramos·Bastian E. Grønager·Martin Skovgaard Andersen·J. W. Andreasen
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Abstract

We present an alternative numerical reconstruction algorithm for direct tomographic reconstruction of a sample refractive indices from the measured intensities of its far-field coherent diffraction patterns. We formulate the well-known phase-retrieval problem in ptychography in a tomographic framework which allows for simultaneous reconstruction of the illumination function and the sample refractive indices in three dimensions. Our iterative reconstruction algorithm is based on the Levenberg-Marquardt algorithm. We demonstrate the performance of our proposed method with simulation studies.

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T. Ramos, Bastian E. Grønager, Martin Skovgaard Andersen, J. W. Andreasen. 2018-07-30. Direct 3D Tomographic Reconstruction and Phase-Retrieval of Far-Field Coherent Diffraction Patterns. https://doi.org/10.1103/physreva.99.023801

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