On the Burgers vector of a wave dislocation

  title={On the Burgers vector of a wave dislocation},
  author={Mark R. Dennis},
  journal={arXiv: Optics},
  • M. Dennis
  • Published 1 May 2009
  • Physics
  • arXiv: Optics
Following Nye and Berry's analogy with crystal dislocations, an approach to the Burgers vector of a wave dislocation (phase singularity, optical vortex) is proposed. It is defined to be a regularized phase gradient evaluated at the phase singularity, and is computed explicitly. The screw component of this vector is naturally related to the helicoidal twisting of wavefronts along a vortex line, and is related to the helicity of the phase gradient. The edge component is related to the nearby… 

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