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Digital Inline Holographic Microscopy (DIHM) of Weakly-scattering Subjects
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Probe retrieval in ptychographic coherent diffractive imaging.

Pierre Thibault1, Martin Dierolf, Oliver Bunk

  • 1Paul Scherrer Institut, 5232 Villigen PSI, Switzerland. pierre.thibault@psi.ch

Ultramicroscopy
|February 10, 2009
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Summary
This summary is machine-generated.

This study introduces a new ptychography reconstruction method that eliminates the need for prior illumination knowledge. The advanced algorithm successfully images specimens and their illumination profiles, improving reconstruction quality.

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Area of Science:

  • Coherent diffractive imaging
  • X-ray microscopy
  • Optical imaging

Background:

  • Ptychography is a powerful coherent diffractive imaging technique.
  • Traditional ptychography reconstruction requires a priori knowledge of the illumination.
  • Recent advancements have enabled illumination-retrieving ptychography with hard X-rays.

Purpose of the Study:

  • To detail a novel ptychography reconstruction algorithm.
  • To demonstrate the algorithm's applicability using visible light data.
  • To compare reconstruction quality with existing methods.

Main Methods:

  • Developed a new ptychography reconstruction algorithm.
  • Applied the algorithm to a visible light dataset.
  • Validated the retrieval of both specimen image and illumination profile.

Main Results:

  • Successfully reconstructed specimen images and illumination profiles without prior knowledge.
  • Demonstrated improved reconstruction quality compared to previous techniques.
  • Showcased the algorithm's practical applicability in visible light imaging.

Conclusions:

  • The developed algorithm offers a significant advancement in ptychography.
  • This method broadens the applicability of ptychography to various radiation types.
  • Future research can explore its use in advanced imaging applications.