Near-field optical properties and surface plasmon effects generated by a dielectric hole in a silver-shell nanocylinder pair | Zendy

YuanFong Chou Chau | Zendy; Han-Hsuan Yeh | Zendy; Din Ping Tsai | Zendy

Open Access

Near-field optical properties and surface plasmon effects generated by a dielectric hole in a silver-shell nanocylinder pair

Author(s) -

YuanFong Chou Chau,

Han-Hsuan Yeh,

Din Ping Tsai

Publication year - 2008

Publication title -

applied optics

Language(s) - English

Resource type - Journals

ISSN - 0003-6935

DOI - 10.1364/ao.47.005557

Subject(s) - materials science , surface plasmon , dielectric , optics , plasmon , shell (structure) , surface plasmon polariton , localized surface plasmon , wavelength , plane wave , optoelectronics , physics , composite material

Near-field optical properties and surface plasmon effects in a silver-shell nanocylinder pair with five different dielectric holes (DHs) that interact with a transverse magnetic mode incident plane wave are simulated by use of the finite-element method, which includes the investigation of particle-particle interaction. The proposed structure exhibits a redshifted localized surface plasmon that can be tuned over an extended wavelength range by varying the dielectric constant in DHs and the thickness of the nanocylinder silver shell. The increase in the near-field intensity is attributed to a larger effective size of DH that is filled with a higher refractive medium.

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