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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 6 — Feb. 20, 2009
  • pp: 1198–1211

Experimental assessment of the matched filter for laser guide star wavefront sensing

Rodolphe Conan, Olivier Lardière, Glen Herriot, Colin Bradley, and Kate Jackson  »View Author Affiliations

Applied Optics, Vol. 48, Issue 6, pp. 1198-1211 (2009)

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Laser guide star wavefront sensing comes with several limitations. When imaged with a Shack– Hartmann wavefront sensor, the laser guide star is seen as extended sources elongated in the directions given by the lenslet locations and the laser axis. A test bed has been built in the Adaptive Optics Laboratory of the University of Victoria that reproduces this effect as seen on extremely large telescopes. A new wavefront sensing algorithm, the matched filter, has been implemented and its performance assessed with the test bed. Its ability to mitigate laser guide star aberrations by tracking the sodium layer fluctuations in a closed loop adaptive optics system is shown.

© 2009 Optical Society of America

OCIS Codes
(000.3110) General : Instruments, apparatus, and components common to the sciences
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(010.3310) Atmospheric and oceanic optics : Laser beam transmission
(010.7350) Atmospheric and oceanic optics : Wave-front sensing
(010.0280) Atmospheric and oceanic optics : Remote sensing and sensors

ToC Category:
Atmospheric and Oceanic Optics: Wave-front Sensing

Original Manuscript: October 13, 2008
Revised Manuscript: January 23, 2009
Manuscript Accepted: February 2, 2009
Published: February 19, 2009

Rodolphe Conan, Olivier Lardière, Glen Herriot, Colin Bradley, and Kate Jackson, "Experimental assessment of the matched filter for laser guide star wavefront sensing," Appl. Opt. 48, 1198-1211 (2009)

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