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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 20 — Oct. 7, 2013
  • pp: 23885–23895

A Zernike mode decomposition decoupling control algorithm for dual deformable mirrors adaptive optics system

Wenjin Liu, Lizhi Dong, Ping Yang, Xiang Lei, Hu Yan, and Bing Xu  »View Author Affiliations

Optics Express, Vol. 21, Issue 20, pp. 23885-23895 (2013)

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A simple but effective decoupling control algorithm based on Zernike mode decomposition for adaptive optics systems with dual deformable mirrors is proposed. One of the two deformable mirrors is characterized with a large stroke (woofer) and the other with high spatial resolutions (tweeter). The algorithm works as follows: wavefront gradient vector is decoupled using the Zernike modes at first, and then the control vector for the woofer is generated with low order Zernike coefficients to eliminate high order modes. At the same time the control vector for the tweeter is reset by a constraint matrix in order to avoid coupling error accumulation. Simulation indicates the algorithm could get better performance compared with traditional Zernike mode decomposition control algorithms. Experiments demonstrate that this algorithm can effectively compensate for phase distortions and significantly suppress the coupling between the woofer and tweeter.

© 2013 Optical Society of America

OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(090.1000) Holography : Aberration compensation
(010.1285) Atmospheric and oceanic optics : Atmospheric correction

ToC Category:
Adaptive Optics

Original Manuscript: July 22, 2013
Revised Manuscript: August 30, 2013
Manuscript Accepted: September 12, 2013
Published: September 30, 2013

Wenjin Liu, Lizhi Dong, Ping Yang, Xiang Lei, Hu Yan, and Bing Xu, "A Zernike mode decomposition decoupling control algorithm for dual deformable mirrors adaptive optics system," Opt. Express 21, 23885-23895 (2013)

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