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Plasmonic jets and hooks: towards manipulation of light at the nanoscale

We report on our recent approaches focused on the formation of a new class of subwavelength scale self-bending light beams, discovered in 2015, in application to in-plane surface plasmon. For the particle with broken symmetry (Janus particle) the morphology of the field localization area depends on the orientation of the particle that resembles the two faces of “Janus bifrons”. Photonic hook (PH) light do not propagate along straight line but instead follow curved trajectory. Wavefront analysis of such asymmetric mesoscale structure reveals that the unequal phase of the transmitted plane wave results in the irregularly concave deformation of the wavefront inside the structure that then leads to creation of the PH. Such dielectric structures enabling the realization of ultracompact wavelength-scaled and wavelength selective new inplane nanophotonic components.