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Proceedings Paper

Diffractive metrics for segmented mirrors
Author(s): S. Enguehard; Brian Hatfield
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Paper Abstract

The additional degrees of freedom that arise from segmenting the optical surfaces naturally allow for the development of active control of orbital thermal fluctuations and mechanical stresses as well as atmospheric compensation. The successful performance of segmented optical systems depends on ability to position and control the segments. We briefly review the goal of segment control and our exact analytical solution to adaptive optics segmented mirror control1. Our completely deterministic control solution eliminates the need to do iterations and eliminates the need to develop iterative control algorithms. We also present diffractive concepts for segment position metrology that exploit and transfer diffractive measurement technology from crystallography and condensed matter physics.

Paper Details

Date Published: 30 September 1994
PDF: 5 pages
Proc. SPIE 2210, Space Optics 1994: Space Instrumentation and Spacecraft Optics, (30 September 1994); doi: 10.1117/12.188137
Show Author Affiliations
S. Enguehard, Applied Mathematical Physics Research, Inc. (United States)
Brian Hatfield, Applied Mathematical Physics Research, Inc. (United States)


Published in SPIE Proceedings Vol. 2210:
Space Optics 1994: Space Instrumentation and Spacecraft Optics
Thierry M. Dewandre; Joachim J. Schulte-in-den-Baeumen; Emmanuel Sein, Editor(s)

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