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Proceedings Paper

Open-loop simulations of atmospheric turbulence using the AdAPS interface
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Paper Abstract

We present and analyze experimental results of lab-based open-loop turbulence simulation utilizing the Adaptive Aberrating Phase Screen Interface developed by ATK Mission Research, which incorporates a 2-D spatial light modulator manufactured by Boulder Nonlinear Systems. These simulations demonstrate the effectiveness of a SLM to simulate various atmospheric turbulence scenarios in a laboratory setting without altering the optical setup. This effectiveness is shown using several figures of merit including: long-term Strehl ratio, time-dependant mean-tilt analysis, and beam break-up geometry. The scenarios examined here range from relatively weak (D/ro = 0.167) to quite strong (D/ro = 10) turbulence effects modeled using a single phase-screen placed at the pupil of a Fourier Transforming lens. While very strong turbulence scenarios result long-term Strehl ratios higher than expected, the SLM provided an accurate simulation of atmospheric effects for conventional phase-screen strengths.

Paper Details

Date Published: 22 August 2005
PDF: 10 pages
Proc. SPIE 5894, Advanced Wavefront Control: Methods, Devices, and Applications III, 589404 (22 August 2005); doi: 10.1117/12.617031
Show Author Affiliations
Jeffrey J. Widiker, ATK Mission Research (United States)
Eric P. Magee, ATK Mission Research (United States)

Published in SPIE Proceedings Vol. 5894:
Advanced Wavefront Control: Methods, Devices, and Applications III
Mark T. Gruneisen; John D. Gonglewski; Michael K. Giles, Editor(s)

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