We report a camera system, associated motorized opto-mechanics, and data handling routines for imaging the three-dimensional structure of singularities within scalar and vector optical fields. Using Fourier techniques to analyse a series of cross-sectional images, we measure either the relative phase or state of polarization of monochromatic fields and analyse this for the identification and mapping of their associated singularities.
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O’Holleran et al. (2009) studied this question.
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