Journal
OPTICS EXPRESS
Volume 20, Issue 10, Pages 11166-11177Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.20.011166
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Funding
- European Community [228637 NIM NIL]
- German Academic Exchange Service (DAAD)
- Serbian Ministry of Education and Science [OI171005]
- Senatsverwaltung fur Wissenschaft, Forschung und Kultur des Landes Berlin
- Bundesministerium fur Bildung, Wissenschaft, Forschung und Technologie
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We use spectroscopic ellipsometry to investigate the angular-dependent optical modes of fishnet metamaterials fabricated by nanoimprint lithography. Spectroscopic ellipsometry is demonstrated as a fast and efficient method for metamaterial characterization and the measured polarization ratios significantly simplify the calibration procedures compared to reflectance and transmittance measurements. We show that the modes can be well identified by a combination of comparing different substrates and considering the angular dependence of the Wood's anomalies. The lack of angular dispersion of the anti-symmetric gap-modes does not agree with the model and requires further theoretical investigation. (C) 2012 Optical Society of America
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