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Proceedings Paper

Pyramidal Wavefront Sensor Demonstrator at INO
Author(s): Olivier Martin; Jean-Pierre Véran; Geneviève Anctil; Pascal Bourqui; François Châteauneuf; Jonny Gauvin; Philippe Goyette; François Lagacé; Simon Turbide; Min Wang
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Paper Abstract

Wavefront sensing is one of the key elements of an Adaptive Optics System. Although Shack-Hartmann WFS are the most commonly used whether for astronomical or biomedical applications, the high-sensitivity and large dynamic-range of the Pyramid-WFS (P-WFS) technology is promising and needs to be further investigated for proper justification in future Extremely Large Telescopes (ELT) applications. At INO, center for applied research in optics and technology transfer in Quebec City, Canada, we have recently set to develop a Pyramid wavefront sensor (P-WFS), an option for which no other research group in Canada had any experience. A first version had been built and tested in 2013 in collaboration with NRC-HIA Victoria. Here we present a second iteration of demonstrator with an extended spectral range, fast modulation capability and low-noise, fast-acquisition EMCCD sensor. The system has been designed with compactness and robustness in mind to allow on-sky testing at Mont Mégantic facility, in parallel with a Shack- Hartmann sensor so as to compare both options.

Paper Details

Date Published: 4 August 2014
PDF: 8 pages
Proc. SPIE 9148, Adaptive Optics Systems IV, 91485X (4 August 2014); doi: 10.1117/12.2056893
Show Author Affiliations
Olivier Martin, Institut National d’Optique (Canada)
Jean-Pierre Véran, NRC - Herzberg Institute of Astrophysics (Canada)
Geneviève Anctil, Institut National d’Optique (Canada)
Pascal Bourqui, Institut National d’Optique (Canada)
François Châteauneuf, Institut National d’Optique (Canada)
Jonny Gauvin, Institut National d’Optique (Canada)
Philippe Goyette, Institut National d’Optique (Canada)
François Lagacé, Institut National d’Optique (Canada)
Simon Turbide, Institut National d’Optique (Canada)
Min Wang, Institut National d’Optique (Canada)

Published in SPIE Proceedings Vol. 9148:
Adaptive Optics Systems IV
Enrico Marchetti; Laird M. Close; Jean-Pierre Véran, Editor(s)

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