Journal
OPTICS LETTERS
Volume 35, Issue 7, Pages 904-906Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.35.000904
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Funding
- National Science Foundation (NSF)
- Directorate For Engineering
- Div Of Industrial Innovation & Partnersh [0832304] Funding Source: National Science Foundation
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We report on anomalous field enhancement of terahertz transmission in metallic, rectangular coaxial geometries. The integration of a particle in the hole not only results in a factor of eight increase in normalized transmittance compared to that of the hole-only counterpart, but it also tailors polarization-dependent transmission discrepancy encountered in arrays of rectangular holes. Our experimental and numerical studies on the impact of geometrical dimensions of the integrated particles indicate that dipolar localized surface plasmons of the particles contribute substantially to the terahertz field enhancement through coupling with surface plasmons and localized surface plasmons of the holes. (C) 2010 Optical Society of America
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