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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Vol. 22, Iss. 1 — Jan. 1, 2005
  • pp: 142–147

Hysteresis correction in the curvature adaptive optics system

Qiang Yang, Christ Ftaclas, Mark Chun, and Douglas Toomey  »View Author Affiliations


JOSA A, Vol. 22, Issue 1, pp. 142-147 (2005)
http://dx.doi.org/10.1364/JOSAA.22.000142


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Abstract

An enhancing Coleman–Hodgdon model is introduced to describe the hysteresis curves of the bimorph deformable mirror (DM). Hysteresis curves are measured from a bimorph DM and then experiment is set up for the correction of hysteresis. Finally, step response and transfer functions of a curvature adaptive optics (AO) system are compared in three cases: with DM hysteresis, without hysteresis, and with hysteresis but corrected. Simulation results show that the bandwidth of a curvature AO system is improved significantly under different loop gains after hysteresis of the DM is corrected.

© 2005 Optical Society of America

OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(160.1050) Materials : Acousto-optical materials

History
Original Manuscript: June 8, 2004
Published: January 1, 2005

Citation
Qiang Yang, Christ Ftaclas, Mark Chun, and Douglas Toomey, "Hysteresis correction in the curvature adaptive optics system," J. Opt. Soc. Am. A 22, 142-147 (2005)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-22-1-142

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