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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 12, Iss. 24 — Nov. 29, 2004
  • pp: 6067–6081

Ghost imaging schemes: fast and broadband

M. Bache, E. Brambilla, A. Gatti, and L.A. Lugiato  »View Author Affiliations

Optics Express, Vol. 12, Issue 24, pp. 6067-6081 (2004)

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In ghost imaging schemes information about an object is extracted by measuring the correlation between a beam that passed the object and a reference beam. We present a spatial averaging technique that substantially improves the imaging bandwidth of such schemes, which implies that information about high-frequency Fourier components can be observed in the reconstructed diffraction pattern. In the many-photon regime the averaging can be done in parallel and we show that this leads to a much faster convergence of the correlations. We also consider the reconstruction of the object image, and discuss the differences between a pixel-like detector and a bucket detector in the object arm. Finally, it is shown how to non-locally make spatial filtering of a reconstructed image. The results are presented using entangled beams created by parametric down-conversion, but they are general and can be extended also to the important case of using classically correlated thermal-like beams.

© 2004 Optical Society of America

OCIS Codes
(100.0100) Image processing : Image processing
(110.0110) Imaging systems : Imaging systems
(190.0190) Nonlinear optics : Nonlinear optics
(270.0270) Quantum optics : Quantum optics

ToC Category:
Research Papers

Original Manuscript: September 29, 2004
Revised Manuscript: November 4, 2004
Published: November 29, 2004

M. Bache, E. Brambilla, A. Gatti, and L. Lugiato, "Ghost imaging schemes: fast and broadband," Opt. Express 12, 6067-6081 (2004)

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