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Oncoming exoplanet spectro-imagers like the Planetary Camera and Spectrograph(PCS) for the Extremely Large Telescope (ELT) will aim for a new class ofexoplanets, including Earth-like planets evolving around M dwarfs i.e., closerthan 0.1'' with contrasts around 10^-8. This can be achieved with coronagraphsto modulate the wavefront. Classical coronagraphs are not optimal: 1) theyimpose a planetary photon loss, which is particularly problematic when theinstrument includes a high spectral-resolution spectrograph, 2) someaberrations such as the missing segments of the ELT are dynamic and notcompatible with a static coronagraph design, 3) the coupling of the exoplanetimage with a fiber for spectroscopy only requires the electric field to becontrolled on a small region of the detector. Such instruments would benefitfrom an adaptive tool to modulate the wavefront in both amplitude and phase. Wepropose to combine in the pupil plane a deformable mirror (DM) to control thephase and a digital micro-mirror device (DMD) i.e., an array made of 1920*1080micro-mirrors able to switch between two positions, to control its amplitude.If the DM is already well-known in the field in particular for adaptive opticsapplications, the DMD has so far not been fully considered. At IPAG, we arecurrently assembling a testbed called CIDRE (Coronagraphy for DiRect Imaging ofExoplanets) to develop, test, calibrate, and validate the combination of thesetwo components with a Lyot coronagraph. Since March 2022, CIDRE is assembledalbeit without the Lyot coronagraph yet. The first few months have beendedicated to the calibration of the DMD. Since May 2022, it is operational andused to test dynamic amplitude apodization coronagraphs (so-called ShapedPupils). This proceeding presents the set up of the CIDRE testbench and thefirst experimental results on adaptive Shaped Pupils obtained with the DMD.

Coronagraphy for DiRect Imaging of Exoplanets (CIDRE) testbed 1: concept, optical set up, and experimental results of adaptive amplitude apodization