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.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Yu H,Zhang H,Wang Y,Han S,Yang H,Xu X,Wang Z,Petrov V,Wang Jdoi
10.1038/srep03191subject
Has Abstractpub_date
2013-11-12 00:00:00pages
3191issn
2045-2322pii
srep03191journal_volume
3pub_type
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