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Chang Zhe Zhao1, Hai Peng Zhang2, Jie Tang1

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Summary

A novel crystal beam splitter enables efficient X-ray ghost imaging by providing high correlation between object and reference beams. This advancement allows for high-fidelity imaging of complex objects, even with limited data acquisition.

Keywords:
X-ray beam splitterX-ray ghost imagingspeckle correlation of X-rayssynthetic aperture X-ray ghost imaging

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Area of Science:

  • Physics
  • Optics
  • Materials Science

Background:

  • X-ray ghost imaging offers high efficiency through simultaneous object and reference beam signal acquisition.
  • Achieving beam splitting with a large field of view, uniform distribution, and high correlation has been a significant challenge.

Purpose of the Study:

  • To develop a dedicated crystal beam splitter for overcoming limitations in X-ray ghost imaging.
  • To optimize optical layout and Laue crystal fabrication for enhanced beam splitting properties.

Main Methods:

  • Optimized synchrotron radiation beamline optical layout and Laue crystal fabrication process.
  • Utilized a copper foam modulator to enhance speckle field correlation.
  • Employed synthetic aperture X-ray ghost imaging (SAXGI) for image reconstruction.

Main Results:

  • Achieved a large field of view, consistent size, uniform intensity distribution, and high correlation for split beams.
  • Obtained 92% correlation between object and reference speckle fields and a Glauber function of 1.25.
  • Successfully imaged an 880 × 330 pixel circuit board with high fidelity using SAXGI.
  • Reconstructed the circuit board's skeleton structure with only 1% sampling rate in SAXGI.

Conclusions:

  • The developed crystal beam splitter is effective for efficient X-ray ghost imaging.
  • The beam splitter enables high-fidelity imaging and detailed structural determination even with sparse data.