Fig. 6: Voltage and mean curvature map for a deformable mirror using Zernike Tetrafoil modes.

a The voltage map of the deformable mirror (a) Tetrafoil X = 1 (b) Tetrafoil X = -1. Retrieved mean curvature with (c) Tetrafoil X = 1 (d) Tetrafoil X = -1, and the scale bar unit is m-1. The scale bar is 2 mm