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(Color online) QPM wrapped phase and unwrapped phase after Fresnel reconstruction. (a) Wrapped phase and (b) unwrapped phase map of the rectangle pointed out in (a). In (b) the cell shape, embedded in the wave front curvature, is clearly visible.
(Color online) QPM Phase map of the tiny cell after the subtraction of the fitted surface which is a linear combination of the Zernike polynomials. (a) Only the defocus term and tilts have been considered and (b) third-order spherical aberration and astigmatism also have been taken into account. [(c) and (d)] Pseudo-three-dimensional plot of (a) and (b), respectively.
(Color online) (a) Reconstructed phase map of the cell by means of the double exposure technique and (b) subtraction between the maps obtained with the two different methods.
Zernike polynomials employed to fit the wave front curvature and computed coefficients.
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