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Title: Optical orbital angular momentum conservation during the transfer process from plasmonic vortex lens to light
Authors: Yu, H.Zhang, H.Wang, Y.Han, S.Yang, H.Xu, X.Wang, Z.Petrov, V.Wang, J.
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Issue Date: 2013
Published in: Scientific Reports Vol. 3 (2013)
Publisher: London : Nature Publishing Group
Abstract: We demonstrate the optical orbital angular momentum conservation during the transfer process from subwavelength plasmonic vortex lens (PVLs) to light and the generating process of surface plasmon polaritons (SPPs). Illuminating plasmonic vortex lenses with beams carrying optical orbital angular momentum, the SP vortices with orbital angular momentum were generated and inherit the optical angular momentum of light beams and PVLs. The angular momentum of twisting SP electromagnetic field is tunable by the twisted metal/dielectric interfaces of PVLs and angular momentum of illuminating singular light. This work may open the door for several possible applications of SP vortices in subwavelength region.
Keywords: PVL; SPP; optical orbital angular momentum conservation
DDC: 530
License: CC BY-NC-ND 3.0 Unported
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Appears in Collections:Physik

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