@article {Carli2014,
	title = {Sub-wavelength confinement of the orbital angular momentum of light probed by plasmonic nanorods resonances Autori:},
	journal = {Optics express},
	volume = {22},
	year = {2014},
	pages = {26302–263011},
	publisher = {Optical Society of America,},
	address = {Washington, DC},
	abstract = {We discuss how the topological charge of an OAM-carrying plasmon (Plasmonic Vortex) can be probed by monitoring the near-field response of plasmonic nanostructures suitably arranged inside a Plasmonic Vortex Lens. The turning ön\" or öff\" of four gold nanorods, detected by a Scanning Near field Optical Microscope (SNOM), acts as a fingerprint of the OAM state of the PV at the nanoscale. Different configurations are studied numerically, the integrated structure is fabricated and near field characterization is performed for a particularly meaningful case.},
	issn = {1094-4087},
	doi = {10.1364/OE.22.026302},
	author = {Marta Carli and Pierfrancesco Zilio and Denis Garoli and Valentina Giorgis and Filippo Romanat}
}
