Experimental demonstration of high dynamics phase measurement with the iMZ: reconstruction of the influence function of one of the 140 actuators of the CRAL XAO test bench MEMS deformable mirror (see Sect. 7.2.2 for more details about the experimental setup). Upper panel: pupil plane images of the (a) raw intensity measured on the asymmetric iMZ output, (b) phase retrieved by the arcsine without modulation, (c) phase retrieved by the two-argument arc-tangent with modulation and (d) phase obtained by unwrapping the phase in (c). All phases have been extracted given the calibrated model parameters (see Sect. 5.1). Bottom panel: horizontaL cut of the actuator influence function centered at its peak for the different retrieved phases. at different stages of reconstruction.