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Optics Letters

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  • Vol. 30, Iss. 7 — Apr. 1, 2005
  • pp: 693–695

Concept for a laser guide beacon Shack-Hartmann wave-front sensor with dynamically steered subapertures

Christoph J. Baranec, Brian J. Bauman, and Michael Lloyd-Hart  »View Author Affiliations


Optics Letters, Vol. 30, Issue 7, pp. 693-695 (2005)
http://dx.doi.org/10.1364/OL.30.000693


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Abstract

We describe an innovative implementation of the Shack-Hartmann wave-front sensor that is designed to correct the perspective elongation of a laser guide beacon in adaptive optics. Subapertures are defined by the segments of a deformable mirror rather than by a conventional lenslet array. A bias tilt on each segment separates the beacon images on the sensor's detector. One removes the perspective elongation by dynamically driving each segment with a predetermined open-loop signal that would, in the absence of atmospheric wave-front aberration, keep the corresponding beacon image centered on the subaperture's optical axis.

© 2005 Optical Society of America

OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(010.1330) Atmospheric and oceanic optics : Atmospheric turbulence
(010.7350) Atmospheric and oceanic optics : Wave-front sensing
(220.2740) Optical design and fabrication : Geometric optical design

Citation
Christoph J. Baranec, Brian J. Bauman, and Michael Lloyd-Hart, "Concept for a laser guide beacon Shack-Hartmann wave-front sensor with dynamically steered subapertures," Opt. Lett. 30, 693-695 (2005)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-30-7-693


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