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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 26 — Dec. 24, 2007
  • pp: 18190–18199

Wavefront correction with a 37-actuator ferrofluid deformable mirror

Denis Brousseau, Ermanno F. Borra, and Simon Thibault  »View Author Affiliations

Optics Express, Vol. 15, Issue 26, pp. 18190-18199 (2007)

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This paper discusses an innovative low-cost deformable mirror made of a magnetic liquid (ferrofluid) whose surface is actuated by an hexagonal array of small current carrying coils. Predicted and experimental performances of a 37-actuator ferrofluid deformable mirror are presented along with wavefront correction examples. We show the validity of the model used to compute the actuators currents to obtain a desired wavefront shape. We demonstrate that the ferrofluid deformable mirror can correct a 11 µm low order aberrated wavefront to a residual RMS error of 0.05 µm corresponding to a Strehl ratio of 0.82.

© 2007 Optical Society of America

OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(220.1000) Optical design and fabrication : Aberration compensation
(220.4840) Optical design and fabrication : Testing

ToC Category:
Adaptive Optics

Original Manuscript: November 7, 2007
Revised Manuscript: December 14, 2007
Manuscript Accepted: December 15, 2007
Published: December 19, 2007

Denis Brousseau, Ermanno F. Borra, and Simon Thibault, "Wavefront correction with a 37-actuator ferrofluid deformable mirror," Opt. Express 15, 18190-18199 (2007)

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  1. H. W. Babcock, "Possibility of compensating astronomical seeing," Publ. Astron. Soc. Pac. 65, 229 (1953). [CrossRef]
  2. P. Hickson and M. K. Mulrooney, "University of British Columbia-NASA Multi-Narrowband Survey. I. Description and Photometric Properties of the Survey," Astrophys. J.Suppl. 115, 35-42 (1997). [CrossRef]
  3. R. Cabanac and E. F. Borra, "A search for peculiar objects with the NASA Orbital Debris Observatory 3-m Liquid Mirror Telescope," Astrophys. J. 509, 309-323 (1998). [CrossRef]
  4. R. Sica, S. Sargoytchev, E. F. Borra, L. Girard, S. Argall, C. T. Sarrow and S. Flatt. "Lidar measurements taken with a large aperture liquid mirror: 1. The Rayleigh-Scatter system," Appl. Opt. 34, 6925 (1995). [CrossRef] [PubMed]
  5. R. Wuerker, "Bistatic LMT Lidar Alignment," Opt. Eng. 36, 1421-1424 (1997). [CrossRef]
  6. R. J. Sica and T. Russell, "Measurements of the effects of gravity waves in the middle atmosphere using parametric models of density fluctuations. Part I," J. Atmos. Sci. 56, 1308-1329 (1999). [CrossRef]
  7. R. Ragazzoni and E. Marchetti, "A liquid adaptive mirror," Astron. Astrophys. 283, L17-L19 (1994).
  8. G. Vdovin, M. Loktev, and A. Simonov, "Low-cost deformable mirrors: technologies and goals," Proc. SPIE 5894, 1-10 (2005).
  9. R. E. Rosensweig, Ferrohydrodynamics. (Dover, 1997).
  10. W. L. H. Shutter and L. A. Whitehead, "A wide sky coverage ferrofluid mercury telescope," Astrophys. J. 424, L139-L141 (1994). [CrossRef]
  11. E. M. Vuelban, N. Bhattacharya and J. J. M. Braat, "Liquid deformable mirror for high-order wavefront correction," Opt. Lett. 31, 11, 1717-1719 (2006). [CrossRef] [PubMed]
  12. E. F. Borra, A. M. Ritcey, R. Bergamasco, P. Laird, J. Gingras, M. Dallaire, L. Da Silva and H. Yockell-Lelievre "Nanoengineered Astronomical Optics," Astron. Astrophys. 419, 777-782 (2004). [CrossRef]
  13. P. Laird, E. F. Borra, R. Bergamesco, J. Gingras, L. Truong and A. Ritcey, "Deformable mirrors based on magnetic liquids," Proc. SPIE 5490, 1493-1501 (2004). [CrossRef]
  14. E. F. Borra, D. Brousseau, and A. Vincent., "Large magnetic liquid mirrors," Astron. Astrophys. 446, 389, (2006). [CrossRef]
  15. D. Brousseau, E. F. Borra, H. J. Ruel, and J. Parent, "A magnetic liquid deformable mirror for high stroke and low order axially symmetrical aberrations," Opt. Express 14, 11486 (2006). [CrossRef] [PubMed]
  16. L. Thibos, R. A. Applegate, J. T. Schweigerling, and R. Webb, "Standards for reporting the optical aberrations of eyes," in OSA Trends in Optics and Photonics35, 232-244, (2000).
  17. C. Y. Matuo and A. M. Figueiredo Neto, "Time dependence of the magnetic grain concentration and secondary grain aggregation in ferronematic lyotropic liquid crystals subjected to magnetic field gradients," Phys. Rev E 60, 1815-1820 (1999). [CrossRef]
  18. V. S. Mendelev and A. O. Ivanov, "Ferrofluid aggregation in chains under the influence of a magnetic field," Phys. Rev. E 70, 051502 (2004). [CrossRef]
  19. E. F. Borra, R. Content, L. Girard, S. Szapiel, L. M. Tremblay and E. Boily, "Liquid mirrors: Optical shop tests and contributions to the technology," Astrophys. J. 393, 829-847 (1992). [CrossRef]

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