A hardware implementation for low-order wavefront sensing and control in exoplanet imaging

John Trauger; J. Kent Wallace; John Krist; A. J. Riggs; Duncan Liu

doi:10.1117/12.3020600

23 August 2024 A hardware implementation for low-order wavefront sensing and control in exoplanet imaging

John Trauger, J. Kent Wallace, John Krist, A. J. Riggs, Duncan Liu

Proceedings Volume 13092, Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave; 130926C (2024) https://doi.org/10.1117/12.3020600
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

We describe a NASA Strategic Astrophysics Technology initiative. Our objective is the implementation and closed-loop demonstration of a new optical wavefront control element for the active correction of low-order wavefront errors associated with telescope line-of-sight jitter, thermal gradients, and alignment drift. In concert with a Lyot coronagraph and Zernike wavefront sensor in a laboratory vacuum environment, this hardware demonstrates the separation of active low-order and stable high-order wavefront control at high levels of contrast and provides experimental evidence that significant sources of error have been identified and effectively controlled or mitigated.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

John Trauger, J. Kent Wallace, John Krist, A. J. Riggs, and Duncan Liu "A hardware implementation for low-order wavefront sensing and control in exoplanet imaging", Proc. SPIE 13092, Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave, 130926C (23 August 2024); https://doi.org/10.1117/12.3020600

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