Incoherent Diffraction Imaging with Pseudo-Thermal Light Sources

Laser-plasma X-ray sources are known to suffer from a low degree of spatial and temporal coherence. Ultimately, this feature limits their range of applications, especially for high-resolution imaging purposes. Recently, a new diffraction-based imaging technique named Incoherent Diffraction Imaging (IDI) [1] has been proposed to leverage the partial coherence of incoherently scattered light - or from partially coherent light sources. This method relies on second-order spatial correlations <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$(g^{(2)})$</tex> of the emitted light to extract structural information from scattering centers. The information about the spatial distribution of the target is therefore encoded in the spatial intensity fluctuations of the scattered light. This imaging technique will open the possibility to perform high resolution diffraction-based imaging with typically considered incoherent light sources such as laser-plasma X-ray sources.

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Published
2025-06-23
DOI
https://doi.org/10.1109/cleo/europe-eqec65582.2025.11111547
Primary Topic
Advanced X-ray Imaging Techniques
Type
article
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article

Incoherent Diffraction Imaging with Pseudo-Thermal Light Sources

Matilde Garcia, Pablo San Miguel Claveria, Philip Mosel, Gareth O. Williams et al.
Advanced X-ray Imaging Techniques
article

Incoherent Diffraction Imaging with Pseudo-Thermal Light Sources

Matilde Garcia, Pablo San Miguel Claveria, Philip Mosel, Gareth O. Williams, Milutin Kovačev, Marco Piccardo, Andrea Trabattoni, Sven Fröhlich, Marta Fajardo, H. Merdji, Jean-Christophe Chanteloup, M. Soares Nunes, David Theidel, L.A. Fernández, Ihsan Fsaifes, M. V. Fernandes, Peer Biesterfeld, Sebastião Antunes
article en

Abstract

Laser-plasma X-ray sources are known to suffer from a low degree of spatial and temporal coherence. Ultimately, this feature limits their range of applications, especially for high-resolution imaging purposes. Recently, a new diffraction-based imaging technique named Incoherent Diffraction Imaging (IDI) [1] has been proposed to leverage the partial coherence of incoherently scattered light - or from partially coherent light sources. This method relies on second-order spatial correlations <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$(g^{(2)})$</tex> of the emitted light to extract structural information from scattering centers. The information about the spatial distribution of the target is therefore encoded in the spatial intensity fluctuations of the scattered light. This imaging technique will open the possibility to perform high resolution diffraction-based imaging with typically considered incoherent light sources such as laser-plasma X-ray sources.

Leibniz University Hannover (DE), Centre National de la Recherche Scientifique (FR), École Polytechnique (FR), Universidade Politécnica de Lisboa (PT), Commissariat à l'Énergie Atomique et aux Énergies Alternatives (FR), Instituto Superior Autónomo de Estudos Politécnicos (PT), Sorbonne Université (FR), Laboratoire pour l'Utilisation des Lasers Intenses (FR), Iscte – Instituto Universitário de Lisboa (PT)
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Advanced X-ray Imaging Techniques
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