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Article Dans Une Revue Physical Review Letters Année : 2013

Generating far-field orbital angular momenta from near-field optical chirality

Résumé

We demonstrate that nanostructures carefully designed on both sides of a thin suspended metallic membrane couple light into a chiral near field and transmit vortex beams through a central aperture that connects the two sides of the membrane. We show how far-field orbital angular momentum (OAM) indices can be tailored through nanostructure designs. We reveal the crucial importance of OAM selection rules imposed by the central aperture and derive OAM summation rules in perfect agreement with experimental data.

Dates et versions

hal-00985225 , version 1 (29-04-2014)

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Yuri Gorodetski, Aurélien Drezet, Cyriaque Genet, Thomas W. Ebbesen. Generating far-field orbital angular momenta from near-field optical chirality. Physical Review Letters, 2013, 110, pp.203906. ⟨10.1103/PhysRevLett.110.203906⟩. ⟨hal-00985225⟩
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