Generation of Bessel beams by parametric frequency doubling in annular nonlinear periodic structures.

  • Saltiel S
  • Krolikowski W
  • Neshev D
 et al. 
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We analyze the second-harmonic generation in two-dimensional photonic structures with radially periodic domains created by poling of a nonlinear quadratic crystal. We demonstrate that the parametric conversion of the Gaussian fundamental beam propagating along the axis of the annular structure leads to the axial emission of the second-harmonic field in the form of the radially polarized first-order Bessel beam.

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  • Solomon Saltiel

  • Wieslaw Krolikowski

  • Dragomir Neshev

  • Yuri S Kivshar

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