Helical light emission from plasmonic vortices via magnetic tapered tip

N. Maccaferri, Y. Gorodetski, D. Garoli

Research output: Contribution to journalConference articlepeer-review


We investigate an architecture where a plasmonic vortex excited in a gold surface propagates on an adiabatically tapered magnetic tip and detaches to the far-field while carrying a well-defined optical angular momentum. We analyze the out-coming light and show that, despite generally high losses of flat magnetic surface, our 3D structure exhibits high energy throughput. Moreover, we show that once a magneto-optical activity is activated inside the magnetic tip a modulation of the total power transmittance is possible.

Original languageEnglish
Article number012001
JournalJournal of Physics: Conference Series
Issue number1
StatePublished - 1 Feb 2018
Event2nd Nanophotonics and Micro/Nano Optics International Conference 2017, NANOP 2017 - Barcelona, Spain
Duration: 13 Sep 201715 Sep 2017


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