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Figure 1
Differential speckle based imaging setup. (a) A reference image (set) is recorded with the speckle membrane in the beam; (b) the sample is then placed in the beam, distorting the speckle field. A new image (set) is recorded. The object-induced phase can be numerically retrieved by comparing the sample and the reference images. Here zs is the distance from the source to the speckle modulator, z1 from the membrane to the sample, and z2 the sample-to-detector distance. D⊥ is the transverse speckle displacement in the detector plane and α the associated deflection angle.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 32| Part 1| January 2025|
https://doi.org/10.1107/S1600577524010117
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