Polarimetric and interferometric measurement of orbital angular momentum imparted by single plasmon nano-antennas

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DOI http://dx.doi.org/10.1364/cosi.2019.cth3a.2
Reference R. Röhrich, C. Hoekmeijer, C.I. Osorio and A.F. Koenderink: Polarimetric and interferometric measurement of orbital angular momentum imparted by single plasmon nano-antennas In: Imaging and Applied Optics 2019 (COSI, IS, MATH, pcAOP), CTh3A.2, OSA, 2019.
Group Resonant Nanophotonics

We report an experimental technique for quantitative analysis of amplitude, phase, directivity and polarization of wavefronts scattered by single nano-objects. As a demonstration we quantify the spin and orbital angular momentum imposed by plasmonic spiral nano-antennas