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Proceedings Paper

Adaptive compensation of atmospheric turbulence utilizing an interferometric wavefront sensor and a high-resolution MEMS-based spatial light modulator
Author(s): Kevin L. Baker; Eddy A. Stappaerts; Don Gavel; Jack Tucker; Dennis A. Silva; Scott C. Wilks; Scot S. Olivier; Jeff A. Olsen
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Paper Abstract

Horizontal path correction of optical beam propagation presents a severe challenge to adaptive optics systems due to the short transverse coherence length and the high degree of scintillation incurred by propagation along these paths. The system presented operates with nearly monochromatic light. It does not require a global reconstruction of the phase, thereby eliminating issues with branch points and making its performance relatively unaffected by scintillation. The systems pixel count, 1024, and relatively high correction speed, in excess of 800 Hz, enable its use for correction of horizontal path beam propagation. We present results from laboratory and field tests of the system in which we have achieved Strehl ratios greater than 0.5.

Paper Details

Date Published: 12 October 2004
PDF: 12 pages
Proc. SPIE 5553, Advanced Wavefront Control: Methods, Devices, and Applications II, (12 October 2004); doi: 10.1117/12.563669
Show Author Affiliations
Kevin L. Baker, Lawrence Livermore National Lab. (United States)
Eddy A. Stappaerts, Lawrence Livermore National Lab. (United States)
Don Gavel, Lawrence Livermore National Lab. (United States)
Jack Tucker, Lawrence Livermore National Lab. (United States)
Dennis A. Silva, Lawrence Livermore National Lab. (United States)
Scott C. Wilks, Lawrence Livermore National Lab. (United States)
Scot S. Olivier, Lawrence Livermore National Lab. (United States)
Jeff A. Olsen, Lawrence Livermore National Lab. (United States)


Published in SPIE Proceedings Vol. 5553:
Advanced Wavefront Control: Methods, Devices, and Applications II
John D. Gonglewski; Mark T. Gruneisen; Michael K. Giles, Editor(s)

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