Structure of light in the near field of photonic crystals: -Losses, highly structured intensity patterns and polarization singularities-

The polarization above a photonics crystal structure is highly dependent on position to extent that the field even contains polarization singularities. When a nanophotonic structure is used to slow the light down, the concomitant increase in the light-matter interaction leads to a transition at a certain group velocity from a regime where imperfections can be considered as a minor perturbation to one where they come to dominate the light propagation and induce multiple scattering.