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Proceedings Paper

Testing and integrating the laser system of ARGOS: the ground layer adaptive optics for LBT
Author(s): C. Loose; S. Rabien; L. Barl; J. Borelli; M. Deysenroth; W. Gaessler; H. Gemperlein; M. Honsberg; M. Kulas; R. Lederer; W. Raab; G. Rahmer; J. Ziegleder
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Paper Abstract

The Laser Guide Star facility ARGOS will provide Ground Layer Adaptive Optics to the Large Binocular Telescope (LBT). The system operates three pulsed laser beacons above each of the two primary mirrors, which are Rayleigh scattered in 12km height. This enables correction over a wide field of view, using the adaptive secondary mirror of the LBT. The ARGOS laser system is designed around commercially available, pulsed Nd:YAG lasers working at 532 nm. In preparation for a successful commissioning, it is important to ascertain that the specifications are met for every component of the laser system. The testing of assembled, optical subsystems is likewise necessary. In particular it is required to confirm a high output power, beam quality and pulse stability of the beacons. In a second step, the integrated laser system along with its electronic cabinets are installed on a telescope simulator. This unit is capable of carrying the whole assembly and can be tilted to imitate working conditions at the LBT. It allows alignment and functionality testing of the entire system, ensuring that flexure compensation and system diagnosis work properly in different orientations.

Paper Details

Date Published: 13 September 2012
PDF: 11 pages
Proc. SPIE 8447, Adaptive Optics Systems III, 84474I (13 September 2012); doi: 10.1117/12.927101
Show Author Affiliations
C. Loose, Max-Planck-Institut für extraterrestrische Physik (Germany)
S. Rabien, Max-Planck-Institut für extraterrestrische Physik (Germany)
L. Barl, Max-Planck-Institut für extraterrestrische Physik (Germany)
J. Borelli, Max-Planck-Institut für Astronomie (Germany)
M. Deysenroth, Max-Planck-Institut für extraterrestrische Physik (Germany)
W. Gaessler, Max-Planck-Institut für Astronomie (Germany)
H. Gemperlein, Max-Planck-Institut für extraterrestrische Physik (Germany)
M. Honsberg, Max-Planck-Institut für extraterrestrische Physik (Germany)
M. Kulas, Max-Planck-Institut für Astronomie (Germany)
R. Lederer, Max-Planck-Institut für extraterrestrische Physik (Germany)
W. Raab, Max-Planck-Institut für extraterrestrische Physik (Germany)
G. Rahmer, Large Binocular Telescope (United States)
J. Ziegleder, Max-Planck-Institut für extraterrestrische Physik (Germany)


Published in SPIE Proceedings Vol. 8447:
Adaptive Optics Systems III
Brent L. Ellerbroek; Enrico Marchetti; Jean-Pierre Véran, Editor(s)

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