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Proceedings Paper

Real-time wavefront reconstruction for a 512-subaperture adaptive optical system
Author(s): Paul A. Johnson; Richard G. Trissel; Edward Louis Cuellar; Robert L. Arnold; David G. Sandler
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Paper Abstract

This paper describes a system capable of real-time wavefront reconstruction for a 512 subaperture shearing interferometer. The system was designed to interface with a 1536 channel (512 segment) deformable mirror for atmospheric compensation using an artificial beacon. The phase gradients were measured using a shearing interferometer operating at two distinct shear lengths with quantum limited performance at 200 photons per subaperture. A 128 node parallel processor performed a sparse matrix multiply to reconstruct the phasefront in real time. The matrix truncation technique used allowed 90% of the elements to be removed with only minor penalty in wavefront accuracy.

Paper Details

Date Published: 13 January 1992
PDF: 12 pages
Proc. SPIE 1543, Active and Adaptive Optical Components, (13 January 1992); doi: 10.1117/12.51201
Show Author Affiliations
Paul A. Johnson, Thermo Electron Technologies Corp. (United States)
Richard G. Trissel, Thermo Electron Technologies Corp. (United States)
Edward Louis Cuellar, Thermo Electron Technologies Corp. (United States)
Robert L. Arnold, Thermo Electron Technologies Corp. (United States)
David G. Sandler, Thermo Electron Technologies Corp. (United States)

Published in SPIE Proceedings Vol. 1543:
Active and Adaptive Optical Components
Mark A. Ealey, Editor(s)

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