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REDMOND , Susan

Last name: REDMOND

First name: Susan

August 1, 2021 (v1)

Conference paper

Metadata-only

Wavefront control with algorithmic differentiation on the HiCAT testbed

Will, Scott Perrin, Marshall Por, Emiel

Future space-based coronagraphs will rely critically on focal-plane wavefront sensing and control with deformable mirrors to reach deep contrast by mitigating optical aberrations in the primary beam path. Until now, most focal-plane wavefront control algorithms have been formulated in terms of Jacobian matrices, which encode the predicted...

Uploaded on: December 3, 2022
June 16, 2024 (v1)

Conference paper

Metadata-only

Mid-order wavefront control for exoplanet imaging: preliminary characterization of the segmented deformable mirror and Zernike wavefront sensor on HiCAT

Buralli, Benjamin N'Diaye, Mamadou Pourcelot, Raphaël

We study a mid-order wavefront sensor (MOWFS) to address fine cophasing errors in exoplanet imaging with future large segmented aperture space telescopes. Observing Earth analogs around Sun-like stars requires contrasts down to 10^-10 in visible light. One promising solution consists of producing a high-contrast dark zone in the image of an...

Uploaded on: September 11, 2024