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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 25 — Dec. 8, 2008
  • pp: 20418–20426

Partially correlated azimuthal vortex illumination: Coherence and correlation measurements and effects in imaging

Dean P. Brown and Thomas G. Brown  »View Author Affiliations

Optics Express, Vol. 16, Issue 25, pp. 20418-20426 (2008)

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Correlations in the illumination field have a profound impact on the image contrast for features near the resolution limit. The pupil polarization affects these correlations. We show that a polarization vortex has a particularly dramatic effect. A theoretical model is given for the correlation matrix of a partially correlated source created by placing an azimuthal polarization vortex mode converter in the pupil plane of a critical illumination system. We then validate this model experimentally using a reversed-wavefront Young interferometer, directly show the impact that the phase of the correlation function has on image contrast.

© 2008 Optical Society of America

OCIS Codes
(030.1640) Coherence and statistical optics : Coherence
(110.4980) Imaging systems : Partial coherence in imaging
(260.5430) Physical optics : Polarization
(080.4865) Geometric optics : Optical vortices

ToC Category:
Coherence and Statistical Optics

Original Manuscript: September 3, 2008
Revised Manuscript: October 6, 2008
Manuscript Accepted: October 20, 2008
Published: November 25, 2008

Dean P. Brown and Thomas G. Brown, "Partially correlated azimuthal vortex illumination: Coherence and correlation measurements and effects in imaging," Opt. Express 16, 20418-20426 (2008)

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