4 August 2014 Pyramidal Wavefront Sensor Demonstrator at INO
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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.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Olivier Martin, Olivier Martin, Jean-Pierre Véran, Jean-Pierre Véran, Geneviève Anctil, Geneviève Anctil, Pascal Bourqui, Pascal Bourqui, François Châteauneuf, François Châteauneuf, Jonny Gauvin, Jonny Gauvin, Philippe Goyette, Philippe Goyette, François Lagacé, François Lagacé, Simon Turbide, Simon Turbide, Min Wang, Min Wang, } "Pyramidal Wavefront Sensor Demonstrator at INO", Proc. SPIE 9148, Adaptive Optics Systems IV, 91485X (4 August 2014); doi: 10.1117/12.2056893; https://doi.org/10.1117/12.2056893


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