Fig. 3

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Phase profiles in the input plane for the input beam (top row) and estimated beam (bottom row). The profiles are shown for an input beam experiencing turbulence-induced distortion as tilt along xi (J = 2) in (a) and (e), defocus (J = 4) in (b) and (f), primary coma along xi (J = 8) in (c) and (g), and secondary coma along xi (J = 16) in (d) and (h). The phase is displayed as colours mapped from low (blue) to red (high), given a pinhole aperture with a diameter of d = 15 μm and a fringe spacing of Λ = 87 μm.
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