Innovative low-cost adaptive optics programs: a new mind-set emerges

Jeffrey T. Baker; Jeffrey Foster Friedman; Isabelle Percheron; Lyle G. Finkner; Sergio R. Restaino; Gary C. Loos

doi:10.1117/12.354995

19 July 1999 Innovative low-cost adaptive optics programs: a new mind-set emerges

Jeffrey T. Baker, Jeffrey Foster Friedman, Isabelle Percheron, Lyle G. Finkner, Sergio R. Restaino, Gary C. Loos

Proceedings Volume 3749, 18th Congress of the International Commission for Optics; (1999) https://doi.org/10.1117/12.354995
Event: ICO XVIII 18th Congress of the International Commission for Optics, 1999, San Francisco, CA, United States

Abstract

Gone are the days of unfettered government spending. An affordable, high performance alternative to multi-million dollar adaptive optics systems is required by the scientific and industrial communities. We have constructed and now give early performance specifications for the 1 St ofthree low cost Adaptive Optics systems for the University of Puerto Rico Imaging Interferometer. Built in months, not years, our in-house subsystem developments include (1) a photon counting ICCD Shack-Hartmann wavefront sensor; (2) a zero latency analog wavefront reconstructor; (3) a precision 2D geometry interpolator; (4) a 700Hz bandwidth beamsteering mirror system with photon counting tracker; and (5)adata acquisition, monitoring and deformable mirror control computer. Key to the control system is a 37-element MEM electrostatic membrane deformable mirror purchased from OKO Technologies. Every element of this system is innovative in the sense of exceptionally high performance at low cost. We will discuss the applicability of using several unique 2D liquid crystal spatial light modulators as correcting elements. We will discuss feedback vs. feed-forward implementations of control law, as well as many practical considerations of full implementation. Other possible medical, industrial, and scientific applications of this affordable, high performance AO technology will be presented.

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Jeffrey T. Baker, Jeffrey Foster Friedman, Isabelle Percheron, Lyle G. Finkner, Sergio R. Restaino, and Gary C. Loos "Innovative low-cost adaptive optics programs: a new mind-set emerges", Proc. SPIE 3749, 18th Congress of the International Commission for Optics, (19 July 1999); https://doi.org/10.1117/12.354995

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KEYWORDS

Adaptive optics

Control systems

Deformable mirrors

Photon counting

Wavefront sensors

Analog electronics

Imaging systems

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