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    Optical design and preliminary results of NEW EARTH, first Canadian high-contrast imaging laboratory test bench

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    Type
    Conference Paper
    Authors
    Lardière, Olivier
    Gerard, Benjamin
    Thompson, William
    Marois, Christian
    Véran, Jean Pierre
    Blain, Célia
    Heidrich, Wolfgang cc
    Fu, Qiang cc
    KAUST Department
    Computational Imaging Group
    Computer Science Program
    Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division
    Visual Computing Center (VCC)
    Date
    2020-12-13
    Permanent link to this record
    http://hdl.handle.net/10754/667667
    
    Metadata
    Show full item record
    Abstract
    The NEW EARTH Laboratory (NRC Extreme Wavefront control for Exoplanet Adaptive optics Research Topics at Herzberg) has recently been completed at NRC in Victoria. NEW EARTH is the first Canadian test-bed dedicated to high-contrast imaging. The bench optical design allows a wide range of applications that could require turbulent phase screens, segmented pupils, or custom coronagraphic masks. Super-polished off-axis parabolas are implemented to minimize optical aberrations, in addition to a 468-actuator ALPAO deformable mirror and a Shack Hartmann WFS. The laboratory's immediate goal is to validate the Fast Atmospheric Self-coherent camera Technique (FAST). The first results of this technique obtained in the NEW EARTH laboratory with a Tilt-Gaussian-Vortex focal plane mask, a reflective Lyot stop and Coherent Differential Imaging are encouraging. Future work will be aimed at expanding this technique to broader wavebands in the context of extremely large telescopes and at visible bands for space-based observatories.
    Citation
    Lardière, O., Gerard, B. L., Thompson, W., Marois, C., Véran, J.-P., Blain, C., … Fu, Q. (2020). Optical design and preliminary results of NEW EARTH, first Canadian high-contrast imaging laboratory test bench. Adaptive Optics Systems VII. doi:10.1117/12.2561803
    Publisher
    SPIE-Intl Soc Optical Eng
    Conference/Event name
    Adaptive Optics Systems VII 2020
    ISBN
    9781510636835
    DOI
    10.1117/12.2561803
    Additional Links
    https://www.spiedigitallibrary.org/conference-proceedings-of-spie/11448/2561803/Optical-design-and-preliminary-results-of-NEW-EARTH-first-Canadian/10.1117/12.2561803.full
    ae974a485f413a2113503eed53cd6c53
    10.1117/12.2561803
    Scopus Count
    Collections
    Conference Papers; Computer Science Program; Visual Computing Center (VCC); Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division

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