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Proceedings Paper

Final design of the wavefront sensor unit for ARGOS, the LBT's LGS facility
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Paper Abstract

In this paper we present the final design of the WFS unit of LBT's ARGOS facility, that will implement a GLAO system using 3 Rayleigh pulsed beacons. The ARGOS WFS is composed of two main subunits: 1) a large dichroic window that deflects the laser beam toward the WFS and transmit the visible and near-infrared wavelength to the MOSimager LUCIFER and 2) the SH-WFS that collects the backscattered light of the 3 beacons and combines the beams on a single lenslet array and detector. The WFS unit includes Pockels cells for the range gating of the laser beams, field and pupil stabilizers to compensate for the fast jitter of the laser beams and for optical flexures and a calibration unit to check the internal alignment; this unit will be also used for closed-loop laboratory tests using a MEMS-DM.

Paper Details

Date Published: 22 July 2010
PDF: 14 pages
Proc. SPIE 7736, Adaptive Optics Systems II, 77365K (22 July 2010); doi: 10.1117/12.858206
Show Author Affiliations
Lorenzo Busoni, Osservatorio Astrofisico di Arcetri (Italy)
Marco Bonaglia, Osservatorio Astrofisico di Arcetri (Italy)
Simone Esposito, Osservatorio Astrofisico di Arcetri (Italy)
Luca Carbonaro, Osservatorio Astrofisico di Arcetri (Italy)
Sebastian Rabien, Max-Planck-Institut für extraterrestrische Physik (Germany)

Published in SPIE Proceedings Vol. 7736:
Adaptive Optics Systems II
Brent L. Ellerbroek; Michael Hart; Norbert Hubin; Peter L. Wizinowich, Editor(s)

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