Generation of optical vorticity from topological defects

Sebastien Fumeron (1) , Erms Pereira (2) , Fernando Gehm Moraes (3)

1 IJL - Institut Jean Lamour
2 UFAL - Universidade Federal de Alagoas = Federal University of Alagoas
3 Departamento de Fisica, Universidade Federal de Pernambuco

The propagation of an electromagnetic wave along a chiral string (or screw dislocation) is studied. Adopting the formalism of differential forms, it is shown that the singular torsion of the defect is responsible for quantized modes. Moreover, it is demonstrated that the modes thus obtained have well defined orbital angular momentum, opening the possibility for applications relevant both for cosmology and for optics.

Domaines: Chimie inorganique

Sebastien Fumeron, Erms Pereira, Fernando Gehm Moraes. Generation of optical vorticity from topological defects. Physica B: Condensed Matter, 2015, 476, pp.19-23. ⟨10.1016/j.physb.2015.07.010⟩. ⟨hal-01281616⟩