Adaptive optics control system for segmented MEMS deformable mirrors

Iris AO has developed a full closed-loop control system for control of segmented MEMS deformable mirrors. It is based on a combination of matched wavefront sensing, modal wavefront estimation, and well-calibrated open-loop characteristics. This assures closed-loop operation free of problems related to co-phasing segments or undetectable waffle patterns. This controller strategy results in relatively simple on-line computations which are suitable for implementation on low cost digital signal processors. It has been successfully implemented on Iris AO's 111 actuator (37 segment) deformable mirrors used in test-beds and research systems.

[1]  M. Horenstein,et al.  Microelectromechanical deformable mirrors , 1999 .

[2]  Y Fainman,et al.  Adaptive control of a micromachined continuous-membrane deformable mirror for aberration compensation. , 1999, Applied optics.

[3]  Gary Chanan,et al.  Principles of Wavefront Sensing and Reconstruction , 2004 .

[4]  Jean-Pierre Véran,et al.  Optimal modal fourier-transform wavefront control. , 2005, Journal of the Optical Society of America. A, Optics, image science, and vision.

[5]  T. Wilson,et al.  Adaptive aberration correction in a confocal microscope , 2002, Proceedings of the National Academy of Sciences of the United States of America.

[6]  Donald T. Gavel.  Suppressing anomalous localized waffle behavior in least-squares wavefront reconstructors , 2003, SPIE Astronomical Telescopes + Instrumentation.

[7]  J. Hardy,et al.  Adaptive Optics for Astronomical Telescopes , 1998 .

[8]  E. Wolf,et al.  Principles of Optics (7th Ed) , 1999 .

[9]  R. Noll.  Zernike polynomials and atmospheric turbulence , 1976 .

[10]  Lisa A Poyneer,et al.  Fast wave-front reconstruction in large adaptive optics systems with use of the Fourier transform. , 2002, Journal of the Optical Society of America. A, Optics, image science, and vision.

[11]  Christian Rembe,et al.  Micromirrors for Adaptive-Optics Arrays , 2001 .

[12]  Curtis R Vogel,et al.  Modeling, simulation, and open-loop control of a continuous facesheet MEMS deformable mirror. , 2006, Journal of the Optical Society of America. A, Optics, image science, and vision.

[13]  Lawton H Lee.  Loopshaped wavefront control using open-loop reconstructors. , 2006, Optics express.

[14]  Gary Chanan,et al.  Measurement accuracy in control of segmented-mirror telescopes. , 2004, Applied optics.

[15]  J W Goodman,et al.  Optimal wavefront control for adaptive segmented mirrors. , 1989, Applied optics.

[16]  T. Wilson,et al.  Characterizing specimen induced aberrations for high NA adaptive optical microscopy. , 2004, Optics express.

[17]  Michael A. Helmbrecht,et al.  Piston-tip-tilt positioning of a segmented MEMS deformable mirror , 2007, SPIE MOEMS-MEMS.