Extracting hysteresis from nonlinear measurement of wavefront-sensorless adaptive optics system
Optics Letters, Vol. 34, Issue 1, pp. 61-63 (2009)
http://dx.doi.org/10.1364/OL.34.000061
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Abstract
In many scientific and medical applications wavefront-sensorless adaptive optics (AO) systems are used to correct the wavefront aberration by optimizing a certain target parameter, which is nonlinear with respect to the control signal to the deformable mirror (DM). Hysteresis is the most common nonlinearity of DMs, which can be corrected if the information about the hysteresis behavior is present. We report a general approach to extract hysteresis from the nonlinear behavior of the adaptive optical system, with the illustration of a Foucault knife test, where the voltage–intensity relationship consists of both hysteresis and some memoryless nonlinearity. The hysteresis extracted here can be used for modeling and linearization of the AO system.
© 2008 Optical Society of America
OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(230.6120) Optical devices : Spatial light modulators
ToC Category:
Optical Devices
History
Original Manuscript: September 12, 2008
Revised Manuscript: November 7, 2008
Manuscript Accepted: November 10, 2008
Published: December 24, 2008
Virtual Issues
Vol. 4, Iss. 3 Virtual Journal for Biomedical Optics
Citation
H. Song, G. Vdovin, R. Fraanje, G. Schitter, and M. Verhaegen, "Extracting hysteresis from nonlinear measurement of wavefront-sensorless adaptive optics system," Opt. Lett. 34, 61-63 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-1-61
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