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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 12 — Jun. 8, 2009
  • pp: 9669–9679

Modified Shack–Hartmann wavefront sensor using an array of superresolution pupil filters

Susana Ríos and David López  »View Author Affiliations


Optics Express, Vol. 17, Issue 12, pp. 9669-9679 (2009)
http://dx.doi.org/10.1364/OE.17.009669


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Abstract

A conventional Shack–Hartmann wavefront sensor works with an array of lenslets which produces an array of focal spots in the back focal plane of the lenses. The displacements of the focal spots from a reference position give a measure of the mean local wavefront slopes. To determine the positions of the focal spots, centroiding algorithms have to be used. In this work, the use of superresolution pupil filters to reduce the size of the focal spots is analyzed, as well as its effect on the variance of the centroid estimate, seeking for an enhancing of the sensor accuracy.

© 2009 Optical Society of America

OCIS Codes
(100.5070) Image processing : Phase retrieval
(100.6640) Image processing : Superresolution

ToC Category:
Image Processing

History
Original Manuscript: February 5, 2009
Revised Manuscript: April 8, 2009
Manuscript Accepted: April 12, 2009
Published: May 26, 2009

Citation
Susana Ríos and David López, "Modified Shack–Hartmann wavefront sensor using an array of superresolution pupil filters," Opt. Express 17, 9669-9679 (2009)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-12-9669


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