Evolution of electromagnetic interference through nano-metallic double-slit | Zendy

Kyu-Min Chae | Zendy; Hyun-Ho Lee | Zendy; SangYoup Yim | Zendy; Sang Han Park | Zendy

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Evolution of electromagnetic interference through nano-metallic double-slit

Author(s) -

Kyu-Min Chae,

Hyun-Ho Lee,

SangYoup Yim,

Sang Han Park

Publication year - 2004

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/opex.12.002870

Subject(s) - optics , finite difference time domain method , near and far field , interference (communication) , dielectric , slit , cladding (metalworking) , electromagnetic field , physics , electromagnetic radiation , materials science , optoelectronics , telecommunications , channel (broadcasting) , quantum mechanics , computer science , metallurgy

We investigated the characteristics of the near- and far-field regions of the interference for nano-metallic double-slits using a two-dimensional finite-difference time-domain (FDTD) method. We have found that the patterns in the near-field region have a phase difference of pi with respect to those in the far-field region. A boundary, which separates the interference patterns of the two regions exists as a half circle and grows as the distance between the two slits increase. It is also found that evanescent waves can be enhanced and confined by coating the double-slit with a dielectric cladding.

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