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Error propagation: a comparison of Shack–Hartmann and curvature sensors |
JOSA A, Vol. 28, Issue 5, pp. 801-807 (2011)
http://dx.doi.org/10.1364/JOSAA.28.000801
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Abstract
Phase estimates in adaptive-optics systems are computed by use of wavefront sensors, such as Shack–Hartmann or curvature sensors. In either case, the standard error of the phase estimates is proportional to the standard error of the measurements; but the error-propagation factors are different. We calculate the ratio of these factors for curvature and Shack–Hartmann sensors in dependence on the number of sensors, n, on a circular aperture. If the sensor spacing is kept constant and the pupil is enlarged, the ratio increases as
© 2011 Optical Society of America
OCIS Codes
(110.0115) Imaging systems : Imaging through turbulent media
(110.1080) Imaging systems : Active or adaptive optics
ToC Category:
Imaging Systems
History
Original Manuscript: January 5, 2011
Manuscript Accepted: February 15, 2011
Published: April 18, 2011
Virtual Issues
Vol. 6, Iss. 6 Virtual Journal for Biomedical Optics
Citation
Aglaé N. Kellerer and Albrecht M. Kellerer, "Error propagation: a comparison of Shack–Hartmann and curvature sensors," J. Opt. Soc. Am. A 28, 801-807 (2011)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=josaa-28-5-801
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