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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 67, Iss. 3 — Mar. 1, 1977
  • pp: 390–393

Bandwidth specification for adaptive optics systems

Darryl P. Greenwood  »View Author Affiliations


JOSA, Vol. 67, Issue 3, pp. 390-393 (1977)
http://dx.doi.org/10.1364/JOSA.67.000390


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Abstract

A simplified expression for the bandwidth of an adaptive optics system is found to depend on a weighted path integral of the turbulence strength, where the weighting is transverse wind velocity to the 5/3 power. The wave-front corrector is conservatively assumed to match the phase perfectly, at least spatially, if not temporally. For the case of astronomical imaging from a mountaintop observatory, the necessary bandwidth is found to be less than 200 Hz.

© 1977 Optical Society of America

Citation
Darryl P. Greenwood, "Bandwidth specification for adaptive optics systems," J. Opt. Soc. Am. 67, 390-393 (1977)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-67-3-390


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References

  1. D. P. Greenwood and D. L. Fried, "Power spectra requirements for wave-front-compensative systems," J. Opt. Soc. Am. 66, 193–206 (1976).
  2. V. I. Tatarskii, The Effects of the Turbulent Atmosphere on Wave Propagation (U. S. Department of Commerce, Washington, D. C., NTIS T68-50464, 1971), p. 268.
  3. D. L. Fried and G. E. Mevers, "Evaluation of r for Propagation Down Through The Atmosphere," Appl. Opt. 13, 2620–2622 (1974). [Errata: Appl. Opt. 14, 2567 (1975)].
  4. M. Miller, P. Zieske, and D. Hanson, "Characterization of Atmospheric Turbulence," Proceedings of the SPIE/SPSE Technical Symposiumn East on Imaging Through The Atmosphere, Vol. 75, paper 75-05.
  5. D. P. Greenwood and D. L. Fried, "Power Spectra Requirements for Wavefront-Compensative Systems," Technical Report RADC-TR-75-227, Rome Air Development Center, Griffiss AFB, New York, Sept. 1975.

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