Abstract
A comparison between theoretical and experimental optical fields diffracted by an elliptic aperture in a calcite crystal is given. The field distribution of a paraxial beam propagating along the optical axis of a uniaxial anisotropic crystal is evaluated by means of a vectorial angular spectrum representation; an acceleration method is used to numerically compute the highly oscillating integrals. The cases of hard-edge and tapered-profile circular apertures are also described.
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