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Optics Letters

Optics Letters


  • Vol. 28, Iss. 8 — Apr. 15, 2003
  • pp: 613–615

Separating atmospheric layers in adaptive optics

Erez N. Ribak  »View Author Affiliations

Optics Letters, Vol. 28, Issue 8, pp. 613-615 (2003)

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Several optical schemes have been proposed to measure the separate contributions of atmospheric layers for astronomical adaptive optics. I show here that simple conjugation of the wave-front sensors to the layers is sufficient. Although a larger camera is required for a larger field of view, only the pixels that sense stars are being read out. The nearly periodic Hartmann data are analyzed by Fourier filtering so that the signals from all stars are added up while most of the noise is excluded. Acoustic Hartmann wave-front sensors [Opt. Lett. 26, 1834 (2001)] that switch between layers improve flexibility and sensitivity.

© 2003 Optical Society of America

OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(100.6950) Image processing : Tomographic image processing
(120.5050) Instrumentation, measurement, and metrology : Phase measurement

Erez N. Ribak, "Separating atmospheric layers in adaptive optics," Opt. Lett. 28, 613-615 (2003)

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  1. E. N. Ribak, in Adaptive Optics Engineering Handbook, R. K. Tyson, ed. (Marcel Dekker, New York, 2000), and references therein.
  2. Y. Baharav, E. N. Ribak, and J. Shamir, Opt. Lett. 14, 242 (1994).
  3. Y. Baharav, E. N. Ribak, and J. Shamir, J. Opt. Soc. Am. A 13, 1083 (1996).
  4. T. Berkefeld, D. Soltau, and O. von der Luhe, Proc. SPIE 4839, 66 (2002).
  5. R. Ragazzoni, J. Farinato, and E. Marchetti, Proc. SPIE 4007, 1078 (2000).
  6. R. Ragazzoni, Proc. SPIE 4840 (to be published).
  7. E. Ribak and R. Ragazzoni, Proc. European Southern Observatory 58, 281 (2001).
  8. E. N. Ribak, Opt. Lett. 26, 1834 (2001).
  9. Y. Carmon and E. N. Ribak, Opt. Commun. 215, 285 (2003).
  10. E. N. Ribak, C. Roddier, F. Roddier, and J. B. Breckinridge, Appl. Opt. 27, 1183 (1988).

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