Demonstration of single-picometer deformable mirror wavefront control using high-resolution electronics

Eduardo Bendek; Greg Allan; Garreth Ruane; Matt Noyes; Camilo Mejia Prada; A. J. Eldorado Riggs; Pedro Godoy

doi:10.1117/12.3017631

23 August 2024 Demonstration of single-picometer deformable mirror wavefront control using high-resolution electronics

Eduardo Bendek, Greg Allan, Garreth Ruane, Matt Noyes, Camilo Mejia Prada, A. J. Eldorado Riggs, Pedro Godoy

Proceedings Volume 13092, Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave; 130921X (2024) https://doi.org/10.1117/12.3017631
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Abstract

Deformable mirrors (DMs) are a critical technology to enable coronagraphic direct imaging of exoplanets with current and planned ground- and space-based telescopes as well as future mission concepts, such as the Habitable Worlds Observatory (HWO), which aims to image exoplanet types ranging from gas giants to Earth analogs. These missions set several requirements on the DMs such as large actuator count (≥96×96) and resolution smaller than 2.5 pm. This paper presents the first demonstration of single-picometer wavefront control utilizing a new high-resolution, vacuum-compatible DM electronics and a Zernike Wavefront Sensor for measurement. The controller can handle 2,040 actuators with 125 V maximum voltage with 20-bit resolution, resulting in voltage steps of 119 microvolts that allowed us to demonstrate 0.65 pm resolution of the DM surface.

Conference Presentation

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

Citation Download Citation

Eduardo Bendek, Greg Allan, Garreth Ruane, Matt Noyes, Camilo Mejia Prada, A. J. Eldorado Riggs, and Pedro Godoy "Demonstration of single-picometer deformable mirror wavefront control using high-resolution electronics", Proc. SPIE 13092, Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave, 130921X (23 August 2024); https://doi.org/10.1117/12.3017631

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