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Updated: Aug 15, 2026
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Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
Published on: October 11, 2016
Phase retrieval from diffraction intensities by use of a scanning slit aperture
1College of Engineering, Shizuoka University, 3-5-1 Johoku, Hamamatsu 432-8561, Japan. tsnnaka@ipc.shizuoka.ac.jp
Applied Optics
|October 22, 2005
Summary
This study introduces a new, noniterative method to reconstruct wave field phase from measured intensities. The technique uses Fourier transforms and scanning slit aperture data for advanced coherent imaging applications.
Area of Science:
- Optics and Photonics
- Wave Physics
- Image Reconstruction
Background:
- Phase retrieval is crucial for reconstructing wave fields.
- Existing methods can be iterative or require complex optical setups.
Purpose of the Study:
- To develop a noniterative phase retrieval method using intensity measurements.
- To enable lensless coherent imaging with various particle types.
Main Methods:
- Scanning a slit aperture across the Fresnel-zone plane.
- Recording diffraction intensities at each position.
- Applying a novel phase calculation technique utilizing Fourier transforms.
Main Results:
- Successful noniterative phase retrieval from measured intensities.
- Demonstration of a method applicable to x rays, electrons, and nuclear particles.
- Elimination of the need for lens systems in the imaging process.
Conclusions:
- The proposed method offers a simplified approach to phase retrieval.
- This technique has potential for advancing coherent imaging technologies.
- It provides a lensless imaging solution for diverse wave fields.
