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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 47, Iss. 1 — Jan. 1, 2008
  • pp: 79–87

Improving the performance of a pyramid wavefront sensor with modal sensitivity compensation

Visa Korkiakoski, Christophe Vérinaud, and Miska Le Louarn  »View Author Affiliations


Applied Optics, Vol. 47, Issue 1, pp. 79-87 (2008)
http://dx.doi.org/10.1364/AO.47.000079


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Abstract

We describe a solution to increase the performance of a pyramid wavefront sensor (P-WFS) under bad seeing conditions. We show that most of the issues involve a reduced sensitivity that depends on the magnitude of the high frequency atmospheric distortions. We demonstrate in end-to-end closed loop adaptive optics simulations that with a modal sensitivity compensation method a high-order system with a nonmodulated P-WFS is robust in conditions with the Fried parameter r 0 at 0.5 μ m in the range of 0.05 0.10   m . We also show that the method makes it possible to use a modal predictive control system to reach a total performance improvement of 0.06 0.45 in Strehl ratio at 1.6 μ m . Especially at r 0 = 0.05   m the gain is dramatic.

© 2008 Optical Society of America

OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(280.4788) Remote sensing and sensors : Optical sensing and sensors

ToC Category:
Remote Sensing and Sensors

History
Original Manuscript: August 6, 2007
Manuscript Accepted: October 26, 2007
Published: December 20, 2007

Citation
Visa Korkiakoski, Christophe Vérinaud, and Miska Le Louarn, "Improving the performance of a pyramid wavefront sensor with modal sensitivity compensation," Appl. Opt. 47, 79-87 (2008)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-1-79

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