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The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
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Published on: August 12, 2013

Ghost imaging with twisted Gaussian Schell-model beam.

Yangjian Cai1, Qiang Lin, Olga Korotkova

  • 1School of Physical Science and Technology, Suzhou University, Suzhou 215006, China. yangjian_cai@yahoo.com.cn

Optics Express
|February 17, 2009
PubMed
Summary
This summary is machine-generated.

Ghost imaging using twisted Gaussian Schell-model (GSM) beams shows that twist phase significantly impacts image formation. Increasing twist factor reduces image presence but enhances visibility due to improved spatial coherence.

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Area of Science:

  • Optics and Photonics
  • Quantum Imaging

Background:

  • Ghost imaging is a technique that can form an image of an object using only spatially non-correlated light beams.
  • Gaussian Schell-model (GSM) beams are widely used in optical imaging due to their well-defined spatial coherence properties.

Purpose of the Study:

  • To analyze the effect of twist phase in Gaussian Schell-model (GSM) beams on ghost imaging.
  • To investigate the relationship between the twist factor and ghost image characteristics.

Main Methods:

  • Theoretical analysis based on classical optical coherence theory.
  • Simulation of ghost imaging using twisted GSM beams with varying twist factors.

Main Results:

  • The twist phase of GSM beams significantly influences ghost imaging.
  • Increasing the absolute value of the twist factor leads to a gradual disappearance of the ghost image.
  • Conversely, increasing the twist factor enhances the visibility of the ghost image.

Conclusions:

  • The observed phenomena are attributed to the twist phase enhancing the transverse spatial coherence of the twisted GSM beam during propagation.
  • Twisted GSM beams offer a tunable parameter (twist factor) to control ghost imaging properties.