Reference : Magnetoplasmonic control of plasmonic vortices
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/10993/38874
Magnetoplasmonic control of plasmonic vortices
English
Maccaferri, Nicolò mailto [Istituto Italiano di Tecnologia]
Gorodetski, Yuri [> >]
Toma, Andrea [> >]
Zilio, Pierfrancesco [> >]
De Angelis, Francesco [> >]
Garoli, Denis [> >]
2017
Applied Physics Letters
American Institute of Physics
111
20
201104
Yes (verified by ORBilu)
0003-6951
1077-3118
Melville
NY
[en] We theoretically investigate the generation of far-field propagating optical beams with a desired orbital angular momentum by using an archetypical magnetoplasmonic tip surrounded by a gold spiral slit. The use of a magnetic material can lead to important implications once magneto-optical activity is activated through the application of an external magnetic field. The physical model and the numerical study presented here introduce the concept of magnetically tunable plasmonic vortex lens, namely a magnetoplasmonic vortex lens, which ensures a tunable selectivity in the polarization state of the generated nanostructured beam. The presented system provides a promising platform for a localized excitation of plasmonic vortices followed by their beaming in the far-field with an active modulation of both light's transmission and helicity. Published by AIP Publishing.
http://hdl.handle.net/10993/38874
10.1063/1.5001327

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