| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Effect of Thin Metallic Layers on the Refractive Index of a Multilayer System |
| A. Ozturk**, R. Suleymanli, B. Aktas, A. Teber |
Department of Physics, Gebze Institute of Technology, 41400 Kocaeli, Turkey
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| Cite this article: |
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R. Suleymanli, B. Aktas, A. Teber et al 2012 Chin. Phys. Lett. 29 027301 |
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Abstract We present a simplified structure made of periodic metallic layers on a glass substrate, which offers a potentially simpler approach to building photonic crystals. Using microwave experiments and Fresnel formulas, we investigate the refractive index properties of these structures. We make both transmission and reflection measurements and find that the refractive index of a periodic layered media decreases depending on the periodicity of the geometric arrangement, dielectric contrast and filling fraction of metallic layers. It is shown that metallic layers lead to a substantial change of interference pattern which can be interpreted as a result of interference in a uniform medium with a refractive index smaller than 1.
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| Keywords:
73.21.Ac
78.20.Ci
78.67.Pt
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Received: 08 October 2011
Published: 11 March 2012
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| PACS: |
73.21.Ac
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(Multilayers)
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78.20.Ci
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(Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))
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78.67.Pt
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(Multilayers; superlattices; photonic structures; metamaterials)
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