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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 53, Iss. 20 — Jul. 10, 2014
  • pp: 4503–4508

Vortex-phase filtering technique for extracting spatial information from unresolved sources

Garreth J. Ruane, Prachyathit Kanburapa, Jiaxuan Han, and Grover A. Swartzlander, Jr.  »View Author Affiliations


Applied Optics, Vol. 53, Issue 20, pp. 4503-4508 (2014)
http://dx.doi.org/10.1364/AO.53.004503


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Abstract

A white light vortex coronagraph was used to experimentally achieve sub-resolution detection. The angular location of the centroid γ, and the angular extent of circular pinhole sources Θ, were measured to within errors of δγ=±0.015λ/D and δΘ=±0.026λ/D. This technique has two advantages over conventional imaging: simple power measurements are made and shorter exposure times may be required to achieve a sufficient signal-to-noise ratio.

© 2014 Optical Society of America

OCIS Codes
(100.5090) Image processing : Phase-only filters
(100.6640) Image processing : Superresolution
(350.1260) Other areas of optics : Astronomical optics
(220.4298) Optical design and fabrication : Nonimaging optics
(050.4865) Diffraction and gratings : Optical vortices

ToC Category:
Image Processing

History
Original Manuscript: March 19, 2014
Revised Manuscript: May 31, 2014
Manuscript Accepted: June 4, 2014
Published: July 8, 2014

Citation
Garreth J. Ruane, Prachyathit Kanburapa, Jiaxuan Han, and Grover A. Swartzlander, "Vortex-phase filtering technique for extracting spatial information from unresolved sources," Appl. Opt. 53, 4503-4508 (2014)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-53-20-4503

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