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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Vol. 11, Iss. 1 — Jan. 1, 1994
  • pp: 434–443

Dynamic compensation of atmospheric turbulence with far-field optimization

Naresh C. Mehta and Clinton W. Allen  »View Author Affiliations


JOSA A, Vol. 11, Issue 1, pp. 434-443 (1994)
http://dx.doi.org/10.1364/JOSAA.11.000434


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Abstract

An application of far-field optimization to dynamic compensation of atmospheric turbulence is reported. The new method eliminates the need for a wave-front sensor, which is required in conventional adaptive-optical systems, and utilizes simple measures of the point-spread function as figures of merit. Far-field optimization employs the simplex algorithm to configure a segmented or continuous (rubber) deformable mirror iteratively to a state that is conjugate to the local atmospheric turbulence. We achieve significant adaptive-optics correction with far-field optimization in the presence of both static and dynamic Kolmogorov turbulence. Computer simulations are used to predict the far-field performance in terms of the wavelength-dependent turbulence strength, the spatial resolution of adaptive mirrors, and the speed of drifting turbulence with respect to the temporal bandwidth of adaptive optics. Far-field optimization yields better performance with a coarser segmented mirror in the presence of dynamic atmospheric turbulence because of the reduced burden in the optimization process with fewer actuators. There may be a trade-off in terms of efficiency and robustness between segmented adaptive optics and a high-quality deformable mirror.

© 1994 Optical Society of America

History
Original Manuscript: September 16, 1992
Revised Manuscript: February 9, 1993
Manuscript Accepted: December 21, 1992
Published: January 1, 1994

Citation
Naresh C. Mehta and Clinton W. Allen, "Dynamic compensation of atmospheric turbulence with far-field optimization," J. Opt. Soc. Am. A 11, 434-443 (1994)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-11-1-434


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References

  1. J. H. Hardy, “Active optics: a new technology for the control of light,” Proc. IEEE 66, 651–697 (1978). [CrossRef]
  2. C. S. Gardner, B. M. Welsh, L. A. Thompson, “Design and performance analysis of adaptive optical telescopes using laser guide stars,” Proc. IEEE 78, 1721–1743 (1990). [CrossRef]
  3. N. C. Mehta, C. W. Allen, “Remote alignment of segmented mirrors with far-field optimization,” Appl. Opt. 31, 6510–6518 (1992). [CrossRef] [PubMed]
  4. N. C. Mehta, C. W. Allen, “Segmented mirror alignment with far-field optimization in the presence of atmospheric turbulence,” Appl. Opt. 32, 2664–2673 (1993). [CrossRef] [PubMed]
  5. N. C. Mehta, “Remote alignment of adaptive otpical systems with far-field optimization,” in Propagation of High-Energy Laser Beams through the Earth’s Atmosphere II, P. B. Ulrich, L. E. Wilson, eds., Proc. Soc. Photo-Opt. Instrum. Eng.1408, 96–111 (1991). [CrossRef]
  6. J. A. Nelder, R. Mead, “A simplex method for function minimization,” Comput. J. 7, 308–313 (1965). [CrossRef]
  7. W. H. Press, B. P. Flannery, S. A. Teukolsky, W. Vettering, Numerical Recipes (Cambridge U. Press, Cambridge, 1986), p. 289.
  8. J. W. Goodman, Statistical Optics (Wiley, New York, 1985), p. 386.
  9. B. J. Herman, L. A. Strugala, “Method for inclusion of low-frequency contributions in numerical representation of atmospheric turbulence,” in Propagation of High-Energy Laser Beams through the Earth’s Atmosphere, P. B. Ulrich, L. E. Wilson, eds., Proc. Soc. Photo-Opt. Instrum. Eng.1221, 183–192 (1990). [CrossRef]
  10. D. L. Fried, “Statistics of a geometric representation of wave front distortion,”J. Opt. Soc. Am. 55, 1427–1435 (1965). [CrossRef]
  11. R. W. Sinnott, “The Keck Telescope’s giant eye,” Sky Telescope 80(1), 15–22 (1990).
  12. D. S. Acton, R. C. Smithson, “Solar imaging with a segmented adaptive mirror,” Appl. Opt. 31, 3161–3169 (1992). [CrossRef] [PubMed]
  13. N. C. Mehta, “GRAND: a 4-D wave optics code for atmospheric laser propagation,” in Propagation Engineering: Fourth in a Series, L. R. Bissonnette, W. B. Miller, eds., Proc. Soc. Photo-Opt. Instrum. Eng.1487, 398–409 (1991). [CrossRef]

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