Role of radiation and surface plasmon polaritons in the optical interactions between a nano-slit and a nano-groove on a metal surface | Zendy

Long Chen | Zendy; Jacob T. Robinson | Zendy; Michal Lipson | Zendy

Open Access

Role of radiation and surface plasmon polaritons in the optical interactions between a nano-slit and a nano-groove on a metal surface

Author(s) -

Long Chen,

Jacob T. Robinson,

Michal Lipson

Publication year - 2006

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.14.012629

Subject(s) - slit , surface plasmon polariton , surface plasmon , groove (engineering) , optics , nano , extraordinary optical transmission , materials science , radiation , plasmon , polariton , nanophotonics , optoelectronics , physics , metallurgy , composite material

Through full-vectorial simulations and analytical models, we investigate the role of radiation and surface plasmon polaritons (SPP) in the optical interaction between a nano-slit and a parallel nano-groove on a metal surface. We quantitatively confirm the radiaton as the interaction mechanism in perfect electrical conductors (PEC), and verify the role of radiation and SPP in the slit-groove interaction in silver. While the contribution of SPP dominates for the nano-slit and nano-groove placed far apart, the radiation plays a significant role for the nano-slit and nano-groove with smaller separations comparable to one wavelength. We present the first quantitative of the individual contributions of the radiation and SPP on the transmission through the nano-slit.

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