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Proceedings Paper

Fast liquid crystal adaptive mirror for wavefront correction
Author(s): Michael H. Anderson; Loren Max Caldwell; Craig R. Scheffler
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Paper Abstract

We have designed and constructed a prototype adaptive mirror using a nematic liquid crystal as the optical phase modulating material. The mirror has 127 hexagonal elements (actuators) in a 12 mm diameter clear aperture. The liquid crystal is a dual-frequency type that can be driven both parallel to, and orthogonal to, the external driving field by changing the drive frequency. With the dual-frequency liquid crystal we have achieved 1 micron of optical phase delay with full-cycle switching times of 6 ms. The electronic driver was designed to interface with an IBM compatible PC.

Paper Details

Date Published: 3 November 1999
PDF: 8 pages
Proc. SPIE 3760, High-Resolution Wavefront Control: Methods, Devices, and Applications, (3 November 1999); doi: 10.1117/12.367601
Show Author Affiliations
Michael H. Anderson, Meadowlark Optics (United States)
Loren Max Caldwell, Meadowlark Optics (United States)
Craig R. Scheffler, Meadowlark Optics (United States)

Published in SPIE Proceedings Vol. 3760:
High-Resolution Wavefront Control: Methods, Devices, and Applications
John D. Gonglewski; Mikhail A. Vorontsov, Editor(s)

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