Overlapping Double-Hole Nanostructure in a Metal Film for Localized Field Enhancement
We propose a nanostructure consisting of an array of overlapping circular holes in a metal film that allows for eight orders of magnitude increased energy density with respect to the conventional diffraction limit. The field enhancement is achieved by combining two effects: focusing in the double-ho...
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| Veröffentlicht in: | IEEE journal of selected topics in quantum electronics 2006-11, Vol.12 (6), p.1228-1232 |
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| container_end_page | 1232 |
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| container_title | IEEE journal of selected topics in quantum electronics |
| container_volume | 12 |
| creator | Kumar, L.K.S. Gordon, R. |
| description | We propose a nanostructure consisting of an array of overlapping circular holes in a metal film that allows for eight orders of magnitude increased energy density with respect to the conventional diffraction limit. The field enhancement is achieved by combining two effects: focusing in the double-hole structure and the resonance of the array configuration. We study the dependence of the field enhancement on the nanostructure design by using a finite-difference time-domain method and finite-difference mode analysis. The proposed nanostructure design is amenable to focused ion beam milling fabrication, and preliminary structures are shown |
| doi_str_mv | 10.1109/JSTQE.2006.882656 |
| format | Article |
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| ispartof | IEEE journal of selected topics in quantum electronics, 2006-11, Vol.12 (6), p.1228-1232 |
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| language | eng |
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| source | IEEE Electronic Library (IEL) |
| subjects | Arrays Design engineering Diffraction Finite difference method Finite difference methods Focusing Mathematical analysis Metal films Nanophotonics Nanostructure Nonlinear optics Optical device fabrication Optical harmonic generation Optical scattering Plasmons Raman scattering Rough surfaces surface plasmons Surface roughness surface-enhanced Raman spectroscopy Time domain analysis |
| title | Overlapping Double-Hole Nanostructure in a Metal Film for Localized Field Enhancement |
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