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Proceedings Paper

Real-time adaptive optics correction with a ferroelectric liquid crystal spatial light modulator and Shack-Hartmann wavefront sensor
Author(s): Philip M. Birch; James D. Gourlay; Nathan P. Doble; Alan Purvis
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Paper Abstract

Liquid crystal (LC) based spatial light modulators (SLM) offer a low cost alternative to the expensive deformable mirrors used in most adaptive optics systems. Real time correction of simulated atmospheric turbulence is demonstrated. The corrective element is a 10 by 10 pixel ferroelectric liquid crystal (FLC) SLM. An improvement in the Strehl ratio from 23% to 33% with a frame rate of 6Hz was demonstrated. A nematic liquid crystal (NLC) SLM was used to generate realistic atmospheric turbulence.

Paper Details

Date Published: 17 October 1997
PDF: 6 pages
Proc. SPIE 3126, Adaptive Optics and Applications, (17 October 1997); doi: 10.1117/12.290146
Show Author Affiliations
Philip M. Birch, Univ. of Durham (United Kingdom)
James D. Gourlay, Univ. of Durham (United Kingdom)
Nathan P. Doble, Univ. of Durham (United Kingdom)
Alan Purvis, Univ. of Durham (United Kingdom)

Published in SPIE Proceedings Vol. 3126:
Adaptive Optics and Applications
Robert K. Tyson; Robert Q. Fugate, Editor(s)

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