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Applied Optics

Applied Optics


  • Vol. 41, Iss. 13 — May. 1, 2002
  • pp: 2381–2389

Wind-induced deformations in a segmented mirror

Stephen Padin  »View Author Affiliations

Applied Optics, Vol. 41, Issue 13, pp. 2381-2389 (2002)

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A Zernike expansion of wind-induced deformations in a segmented mirror is described. The wind model is a frozen turbulent field with a Kolmogorov spectrum for scales smaller than the outer scale and a flat spectrum for scales larger than the outer scale. The approach allows a mode-by-mode comparison of the wave-front error contributions from atmospheric phase distortions, wind-induced deformations, and the mirror control system noise. This is used to design a controller that minimizes the mirror surface errors by application of corrections based on edge sensor measurements and wave-front measurements on a guide star.

© 2002 Optical Society of America

OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(010.1330) Atmospheric and oceanic optics : Atmospheric turbulence
(010.7060) Atmospheric and oceanic optics : Turbulence
(220.1000) Optical design and fabrication : Aberration compensation

Original Manuscript: November 1, 2001
Revised Manuscript: January 29, 2002
Published: May 1, 2002

Stephen Padin, "Wind-induced deformations in a segmented mirror," Appl. Opt. 41, 2381-2389 (2002)

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