Optical angular momentum conversion in a nanoslit: comment

Etienne Brasselet (1)

1 LOMA - Laboratoire Ondes et Matière d'Aquitaine

In a recent work [Opt. Lett.37, 4946 (2012)], the spin-to-orbital optical angular momentum conversion from a subwavelength slit having a circular shape has been reported. In particular, the conversion efficiency was claimed to be independent of the slit dichroism. Here, we correct such a statement and demonstrate that dichroism strongly influences the process of optical vortex generation.

Mots clés: Optical vortices; Form birefringence; Subwavelength structures & nanostructures

Domaines: Optique [physics.optics]

Etienne Brasselet. Optical angular momentum conversion in a nanoslit: comment. Optics Letters, 2013, 38 (19), pp.3890. ⟨10.1364/OL.38.003890⟩. ⟨hal-00880438⟩