Plasmonic focusing with a coaxial structure illuminated by radially polarized light
نویسندگان
چکیده
منابع مشابه
Plasmonic focusing with a coaxial structure illuminated by radially polarized light.
We propose and analyze a plasmonic lens that is illuminated by a radially polarized light. The lens is made of a coax-like geometry consisting of an annular dielectric slit surrounded by metal. Focusing efficiency is enhanced by the use of a circular grating assisting the coupling of light into surface plasmons. Further enhancement is obtained by introducing a circular Bragg grating on top of t...
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ژورنال
عنوان ژورنال: Optics Express
سال: 2009
ISSN: 1094-4087
DOI: 10.1364/oe.17.000924