TY - JOUR
T1 - Direct three-dimensional tomographic reconstruction and phase retrieval of far-field coherent diffraction patterns
AU - Ayres Pereira da Cunha Ramos, Tiago João
AU - Grønager, Bastian Ellegård
AU - Andersen, Martin Skovgaard
AU - Andreasen, Jens Wenzel
PY - 2019
Y1 - 2019
N2 - We present an alternative numerical reconstruction algorithm for direct
tomographic reconstruction of a sample's 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's refractive indices in three
dimensions. Our iterative reconstruction algorithm is based on the
Levenberg-Marquardt algorithm and we demonstrate the performance of our
proposed method with simulated and real datasets.
AB - We present an alternative numerical reconstruction algorithm for direct
tomographic reconstruction of a sample's 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's refractive indices in three
dimensions. Our iterative reconstruction algorithm is based on the
Levenberg-Marquardt algorithm and we demonstrate the performance of our
proposed method with simulated and real datasets.
U2 - 10.1103/PhysRevA.99.023801
DO - 10.1103/PhysRevA.99.023801
M3 - Journal article
SN - 2469-9926
VL - 99
JO - Physical Review A (Atomic, Molecular and Optical Physics)
JF - Physical Review A (Atomic, Molecular and Optical Physics)
IS - 2
M1 - 023801
ER -