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Interpretation of fringes obtained with coherent gradient sensing
Applied Optics
|October 12, 2010
Abstract:
An interference analysis for double-grating shearing interferometry called coherent gradient sensing is presented, and the results are compared with an earlier geometrical optics analysis and a Fourier optics analysis based on the Fresnel approximation. The influence of the order of approximation in these analyses and the equivalence of fringe interpretation in each case are discussed.
