Sub-wavelength confinement of the orbital angular momentum of light probed by plasmonic nanoantennae resonances

M. Carli; P. Zilio; D. Garoli; V. Giorgis; G. Ruffato; F. Romanato

doi:10.1117/12.2080003

27 February 2015 Sub-wavelength confinement of the orbital angular momentum of light probed by plasmonic nanoantennae resonances

M. Carli, P. Zilio, D. Garoli, V. Giorgis, G. Ruffato, F. Romanato

Author Affiliations +

Proceedings Volume 9371, Photonic and Phononic Properties of Engineered Nanostructures V; 937117 (2015) https://doi.org/10.1117/12.2080003
Event: SPIE OPTO, 2015, San Francisco, California, United States

Abstract

In this work, we study how the Orbital Angular Momentum of a Plasmonic Vortex (an SPP carrying OAM) can be probed by the LSPR of nanoantennae conveniently integrated inside a Plasmonic Vortex Lens. We show that the turning “on” or “off” of the antennae acts as a fingerprint of the OAM of the PV and we discuss a particularly meaningful case. The integrated structure is fabricated and experimentally characterized in the near field. The results are in good agreement with the simulations and seem to prove the capability to transfer OAM properties control at the nanoscale.

Citation Download Citation

M. Carli, P. Zilio, D. Garoli, V. Giorgis, G. Ruffato, and F. Romanato "Sub-wavelength confinement of the orbital angular momentum of light probed by plasmonic nanoantennae resonances", Proc. SPIE 9371, Photonic and Phononic Properties of Engineered Nanostructures V, 937117 (27 February 2015); https://doi.org/10.1117/12.2080003

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