Abstract
Phase singularities in an optical field appear as isolated dark spots and can be generated in active laser cavities or by computer generated holograms. Detection and categorization of these singularities can easily be achieved either by interferometry or Fourier transform pattern recognition using a computer generated hologram.
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Heckenberg, N.R., McDuff, R., Smith, C.P. et al. Laser beams with phase singularities. Opt Quant Electron 24, S951–S962 (1992). https://doi.org/10.1007/BF01588597
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DOI: https://doi.org/10.1007/BF01588597