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Optics Express

Optics Express

  • Editor: J. H. Eberly
  • Vol. 8, Iss. 1 — Jan. 1, 2001
  • pp: 17–26

Cryogenic wavefront correction using membrane deformable mirrors

H. M. Dyson, R. M. Sharples, N. A. Dipper, and G. V. Vdovin  »View Author Affiliations

Optics Express, Vol. 8, Issue 1, pp. 17-26 (2001)

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Micro-machined membrane deformable mirrors (MMDMs) are being evaluated for their suitability as wavefront correctors at cryogenic temperatures. Presented here are experimental results for the change in the initial mirror figure of 37-channel MMDMs from OKO Technologies upon cooling to T=78K. The changes in the influence functions are also explored. Of the sample of 3 mirrors tested, one was found to have sufficiently small initial static aberrations to be useful as a wavefront corrector at this temperature. The influence functions at T=78K were found to be similar in shape to both those at room temperature and theoretical predictions of the MMDMs surface shape. The magnitude of the surface deflection at T=78K was reduced by around 20% compared with room temperature values.

© Optical Society of America

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

ToC Category:
Research Papers

Original Manuscript: November 29, 2000
Published: January 1, 2001

Harold Dyson, Ray Sharples, N. Dipper, and Gleb Vdovin, "Cryogenic wavefront correction using membrane deformable mirrors," Opt. Express 8, 17-26 (2001)

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  1. http://www.okotech.com/
  2. D. Dayton, S. Restaino, J. Gonglewski, J. Gallegos, S. McDermott, S. Browne, S. Rogers, M. Vaidyanathan, M. Shilko, "Laboratory and field demonstration of a low cost membrane mirror adaptive optics system," Optics Communications, 176, 339-345 (2000). [CrossRef]
  3. C. Paterson, I. Munro, J.C. Dainty, "A low cost adaptive optics system using a membrane mirror," Opt. Express, 6, 175-185 (2000), http://www.opticsexpress.org/oearchive/source/20597.htm [CrossRef] [PubMed]
  4. G. Vdovin, P.M. Sarro, S. Middelhoek, "Technology and applications of micromachined adaptive mirrors," Journal of Micromechanics and Microengineering, 9, R8- R19 (1999) [CrossRef]
  5. http://www.okotech.com/pricelist/index.html

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