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On the use of dual frequency nematic material for adaptive optics systems: first results of a closed -loop experiment.

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Abstract

The use of liquid crystal devices for wavefront control has been suggested and implemented by several authors. In this paper we report some preliminary results on the use of Nematic based liquid crystal devices. Several experimental efforts have been carried out in the past few months. One of the main aims was to characterize a new device that uses dual frequency nematic material in a closed loop arrangement.

©2000 Optical Society of America

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Supplementary Material (1)

Media 1: MOV (108 KB)     

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Figures (4)

Figure 1.
Figure 1. Measured performances of dual frequency material vs. frequency
Figure 2.
Figure 2. Schematic lay-out of the experiment
Figure 3.
Figure 3. Average uncompensated and compensated images.
Figure 4.
Figure 4. Video of the closed-loop experiment.(942 KB movie size)

Equations (2)

Equations on this page are rendered with MathJax. Learn more.

OP = Δ z · n .
Δ ϕ = 2 π λ d 2 d 2 [ n ( z ) n ] dz + Δ Φ .
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