Laboratory validation of a laser shaping system before guide star projection

Sebastián Zúñiga; Clémentine Béchet; Héctor González-Núñez; Benoit Neichel; Vincent Fesquet; Vincent Garrel; Pedro Escárate; Mario Castro; Dani Guzmán; Andrés Guesalaga

doi:10.1117/12.2056062

7 August 2014 Laboratory validation of a laser shaping system before guide star projection

Sebastián Zúñiga, Clémentine Béchet, Héctor González-Núñez, Benoit Neichel, Vincent Fesquet, Vincent Garrel, Pedro Escárate, Mario Castro, Dani Guzmán, Andrés Guesalaga

Author Affiliations +

Proceedings Volume 9148, Adaptive Optics Systems IV; 91483I (2014) https://doi.org/10.1117/12.2056062
Event: SPIE Astronomical Telescopes + Instrumentation, 2014, Montréal, Quebec, Canada

Abstract

Multiple sodium laser beacons are a crucial development in multi-conjugate adaptive optics systems that offers wide-field diffraction limited adaptive optics correction to the astronomical community. This correction is strongly dependent on the laser beam power and quality, so a beam shaping concept is currently being developed to speed-up calibration and alignment of the laser before every run. A method previously reported, has now been implemented on a laboratory bench using MEMS deformable mirrors. Necessary calibration and characterization of the deformable mirrors are described and the results for experimental amplitude correction are presented.

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Sebastián Zúñiga, Clémentine Béchet, Héctor González-Núñez, Benoit Neichel, Vincent Fesquet, Vincent Garrel, Pedro Escárate, Mario Castro, Dani Guzmán, and Andrés Guesalaga "Laboratory validation of a laser shaping system before guide star projection", Proc. SPIE 9148, Adaptive Optics Systems IV, 91483I (7 August 2014); https://doi.org/10.1117/12.2056062

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