Optical Poynting singularities of propagating and evanescent vector Bessel beams

Details Optical Poynting singularities of propagating and evanescent vector Bessel beams Optical Poynting singularities of propagating and evanescent vector Bessel beams

2009-11-19

arxiv.org/abs/0911.3754v1

Physics

Optics

8 pages, 5 figures

Scientific paper

For propagating and evanescent vector Bessel beams, we study the singularities of the Poynting vector (Poynting singularities), at which the energy flux density turns to zero. Poynting singularities include all the phase singularities and some of polarization ones (L- and C-points). We reveal the existence conditions and positions of singularities, which are located at cylindrical surfaces around the beam axis. We mark the special case of the evanescent Bessel beam in the form of cylindrical standing wave, that is singular at any spatial point.

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