8 October 2004 Enhancement of optical transmission through planar nanoapertures in a metal film
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The optical transmission mechanism through a ridge nano-aperture in a metal film is discussed based on the waveguide theory and FDTD computations. The transmission enhancement through ridge apertures is associated with the TE10 waveguide propagation mode. In terms of near and far field radiator, the ridge aperture can be represented as a combination of an oscillating electric dipole and two magnetic dipoles. The effects of localized surface plasmon (LSP) excited on the edges of ridge nano-apertures made in silver are discussed. The transmission enhancement and field concentration functions of ridge apertures are confirmed by contact lithography experiments.
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Xianfan Xu, Xianfan Xu, Eric X. Jin, Eric X. Jin, Sreemanth M.V. Uppuluri, Sreemanth M.V. Uppuluri, } "Enhancement of optical transmission through planar nanoapertures in a metal film", Proc. SPIE 5515, Nanoengineering: Fabrication, Properties, Optics, and Devices, (8 October 2004); doi: 10.1117/12.564559; https://doi.org/10.1117/12.564559

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