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Fig. 3

image

Simulation of a 14-mode Zernike cMWS (modes Z3Z16) combined with an APP optimised for a 10-6 dark hole with a 180° opening angle. Left: multiplexed pupil-plane phase design ΨcMWS containing the high spatial frequency HMWS binary grating overlaid on the smoother APP design. Right: corresponding focal-plane PSF: positively and negatively biased PSF copies are located in the top and bottom half of the image respectively, separated by the white dashed lines. Two example pairs are labelled (defocus, Z3 and 45° astigmatism, Z5), illustrating the symmetry of the ± 1 orders about the zeroth order PSF.

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