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Author

Axel Potier

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3 papers indexed here

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Review Open access Sep 2026

Active focal plane phase mask coronagraphy with a discrete pixelated device: I. Study of the theoretical performance trade space

Recent advances in high-contrast exoplanet imaging instrumentation have introduced the concept of adaptive coronagraphy. For example, liquid-crystal-on-silicon spatial light modulators (SLMs) can be used as programmable phase masks or digital micro-mirror devices as configurable pupil apodizers. Adaptive coronagraphy o...

Liu-Rong Lin, Axel Potier, Ruben Tandon et al. · 1 citation
Open access Aug 2026

The PLACID active coronagraphic imager instrument: commissioning status

The world’s first adaptive stellar coronagraph, the Programmable Liquid-crystal Active Coronagraphic Imager for the 4-m DAG telescope (PLACID) uses a spatial light modulator operating from H- to Ks-band to dynamically adjust the focal-plane phase mask entirely in software. Positioned between the TROIA XAO system and th...

Ruben Tandon, Lucas Marquis, Liu-Rong Lin et al. · 0 citations
Open access Aug 2026

SAXO+, the second-stage adaptive optics for SPHERE: high contrast performance analysis

The SAXO+ system is a planned second-stage Adaptive Optics (AO) upgrade to the VLT/SPHERE eXtreme Adaptive Optics (SAXO) system. This consists of adding a second adaptive optics stage using a near-infrared pyramid wavefront sensor to record images of fainter exoplanets around redder stars. In this work, we compare the...

M. Langlois, C. B'echet, L. Schreiber et al. · 2 citations

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