Optimal reconstruction for closed-loop ground-layer adaptive optics with elongated spots
JOSA A, Vol. 27, Issue 11, pp. A1-A8 (2010)
http://dx.doi.org/10.1364/JOSAA.27.0000A1
Enhanced HTML 
Acrobat PDF (225 KB)
Abstract
The design of the laser-guide-star-based adaptive optics (AO) systems for the Extremely Large Telescopes requires careful study of the issue of elongated spots produced on Shack–Hartmann wavefront sensors. The importance of a correct modeling of the nonuniformity and correlations of the noise induced by this elongation has already been demonstrated for wavefront reconstruction. We report here on the first (to our knowledge) end-to-end simulations of closed-loop ground-layer AO with laser guide stars with such an improved noise model. The results are compared with the level of performance predicted by a classical noise model for the reconstruction. The performance is studied in terms of ensquared energy and confirms that, thanks to the improved noise model, central or side launching of the lasers does not affect the performance with respect to the laser guide stars’ flux. These two launching schemes also perform similarly whatever the atmospheric turbulence strength.
© 2010 Optical Society of America
OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(350.1260) Other areas of optics : Astronomical optics
History
Original Manuscript: January 15, 2010
Manuscript Accepted: March 27, 2010
Published: May 17, 2010
Citation
Clémentine Béchet, Michel Tallon, Isabelle Tallon-Bosc, Éric Thiébaut, Miska Le Louarn, and Richard M. Clare, "Optimal reconstruction for closed-loop ground-layer adaptive optics with elongated spots," J. Opt. Soc. Am. A 27, A1-A8 (2010)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-27-11-A1
You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
Related Journal Articles 
- Second-harmonic generation and wave-front correction of a terawatt laser system (OL)
- Theory of branch-point detection and its implementation (JOSAA)
- Theory of continuous-wave excitation of the sodium beacon (JOSAA)
- Analysis of measured photon returns from sodium beacons (JOSAA)
- High-resolution adaptive phase distortion suppression based solely on intensity information (JOSAA)
Related Conference Papers
« Previous Article | Next Article »
OSA is a member of 