| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Beam Manipulation by Metallic Nanoslit Arrays with Perpendicular Cuts inside Slits |
| HAO Zhi-Qiang1,2, LI Yu-Dong1, CHEN Jing1, CHEN Zong-Qiang1, XU Jing-Jun1, SUN Qian1** |
1MOE Key Laboratory of Weak Light Nonlinear Photonics, Tianjin Key Laboratory of Photonics and Technology of Information Science, School of Physics, Nankai University, Tianjin 300071
2Department of Physics, School of Science, Tianjin University of Commerce, Tianjin 300134
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| Cite this article: |
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HAO Zhi-Qiang, LI Yu-Dong, CHEN Jing et al 2012 Chin. Phys. Lett. 29 114212 |
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Abstract Beam manipulation by metallic nanoslit arrays with perpendicular cuts inside the slits was investigated numerically. The simulated results performed by the finite element method (FEM) show that perpendicular cuts with different heights can modulate phase retardation of the transmitted light through the slits. With the proper distribution of cut height, a focused beam is achieved in our metallic nanostructure with four-time amplitude at the focus point and half focal length compared to a slit array without cuts inside. By using asymmetric distribution of height amplitude, a beam deflection around 6° can also be realized in our design.
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Received: 19 July 2012
Published: 28 November 2012
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| PACS: |
42.79.Bh
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(Lenses, prisms and mirrors)
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42.79.Fm
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(Reflectors, beam splitters, and deflectors)
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73.20.Mf
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(Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))
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71.36.+c
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(Polaritons (including photon-phonon and photon-magnon interactions))
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Abstract
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