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Proceedings Paper

Fast computer-free holographic adaptive optics
Author(s): Geoff Andersen; Fassil Ghebremichael; Ravi Gaddipati; Phani Gaddipati
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Paper Abstract

We have constructed an adaptive optics system incorporating a holographic wavefront sensor with the autonomous closed-loop control of a MEMS deformable mirror (DM). HALOS incorporates a multiplexed holographic recording of the response functions of each actuator in a deformable mirror. On reconstruction with an arbitrary input beam, pairs of focal spots are produced. By measuring the relative intensities of these spots a full measurement of the absolute phase can be constructed. Using fast photodiodes, direct feedback correction can be applied to the actuators.

Paper Details

Date Published: 13 September 2012
PDF: 8 pages
Proc. SPIE 8447, Adaptive Optics Systems III, 84472L (13 September 2012); doi: 10.1117/12.924247
Show Author Affiliations
Geoff Andersen, HUA Inc. (United States)
Fassil Ghebremichael, HUA Inc. (United States)
Ravi Gaddipati, HUA Inc. (United States)
Phani Gaddipati, HUA Inc. (United States)


Published in SPIE Proceedings Vol. 8447:
Adaptive Optics Systems III
Brent L. Ellerbroek; Enrico Marchetti; Jean-Pierre Véran, Editor(s)

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