High-fidelity direct coherent diffractive imaging of condensed matter

Morgan, A, D'Alfonso, A, Martin, A, Bishop, A, Quiney, H and Allen, L 2011, 'High-fidelity direct coherent diffractive imaging of condensed matter', Physical Review B (Condensed Matter and Materials Physics), vol. 84, no. 14, pp. 1-6.

Document type: Journal Article
Collection: Journal Articles

Title High-fidelity direct coherent diffractive imaging of condensed matter
Author(s) Morgan, A
D'Alfonso, A
Martin, A
Bishop, A
Quiney, H
Allen, L
Year 2011
Journal name Physical Review B (Condensed Matter and Materials Physics)
Volume number 84
Issue number 14
Start page 1
End page 6
Total pages 6
Publisher American Physical Society
Abstract We present a deterministic strategy to obtain a high-fidelity reconstruction of the exit-surface wave of a specimen of condensed matter from its diffraction pattern. The direct solution of a set of linear equations extracted from the inverse Fourier transform of the diffraction pattern (which is the autocorrelation of the exit-surface wave) is followed by a simple regularization step in which inconsistencies in the data are corrected. This approach is illustrated using the diffraction pattern of a gnat's wing, illuminated with a laser. We also show that a well-defined residual serves as a proxy for the fidelity of the retrieved exit-surface wave. In addition the residual provides a more stringent test of reconstruction quality than has been previously available in conventional iterative phase retrieval procedures and is easily calculated as an integral component of such methods.
Subject Condensed Matter Imaging
DOI - identifier 10.1103/PhysRevB.84.144122
Copyright notice © 2011 American Physical Society.
ISSN 1098-0121
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