Print Email Facebook Twitter Extracting hysteresis from nonlinear measurement of wavefront-sensorless adaptive optics system Title Extracting hysteresis from nonlinear measurement of wavefront-sensorless adaptive optics system Author Song, H. Vdovin, G. Fraanje, R. Schitter, G. Verhaegen, M. Faculty Mechanical, Maritime and Materials Engineering Department Delft Center for Systems and Control Date 2008-12-24 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. Subject active or adaptive opticsspatial light modulators To reference this document use: http://resolver.tudelft.nl/uuid:6cac53ad-4ab7-4172-94cd-66699bcade2c DOI https://doi.org/10.1364/OL.34.000061 Publisher Optical Society of America ISSN 0146-9592 Source http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-1-61 Source Optics Letters, 34 (1) 2009 Part of collection Institutional Repository Document type journal article Rights (c) 2008 Optical Society of America Files PDF Song_2009.pdf 260.41 KB Close viewer /islandora/object/uuid:6cac53ad-4ab7-4172-94cd-66699bcade2c/datastream/OBJ/view