Rayleigh laser guide star calibration unit for the Large Binocular Telescope
Applied Optics, Vol. 49, Issue 31, pp. G53-G59 (2010)
http://dx.doi.org/10.1364/AO.49.000G53
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Abstract
We describe the calibration method to be used for the off-axis laser guide stars at the Large Binocular Telescope’s (LBT’s) advanced Rayleigh guided ground layer adaptive optics system facility and the optical design of a dedicated calibration unit. Several possible solutions for generating artificial stars with the same wavefront as the real beacons were investigated. We find the use of a computer-generated hologram to be the best solution to the problem of producing aberrated light exactly matching that delivered by the primary mirror of the telescope. A detailed design and tolerance analysis is complete and the project is currently moving into the fabrication phase.
© 2010 Optical Society of America
OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(090.1000) Holography : Aberration compensation
ToC Category:
Laser Guide Star System
History
Original Manuscript: April 20, 2010
Manuscript Accepted: May 21, 2010
Published: June 25, 2010
Citation
Christian Schwab and Andrew Rakich, "Rayleigh laser guide star calibration unit for the Large Binocular Telescope," Appl. Opt. 49, G53-G59 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-31-G53
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