Journal
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
Volume 116, Issue 2, Pages 799-804Publisher
SPRINGER
DOI: 10.1007/s00339-013-8159-4
Keywords
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Funding
- National Natural Science Foundation of China [51005001]
- Postdoctoral Science-Research Developmental Foundation of Heilongjiang Province [LBH-Q11082]
- Youth Academic Backbone Support Plan of Heilongjiang Province Ordinary College
- HUST
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We numerically demonstrate a plasmonic analogue of electromagnetically induced transparency in a simple complementary metamaterial, the unit cell of which consists of two bright slot-structures in a homogenous gold film deposited on a glass substrate. A pronounced transparency peak within a broad reflectance resonance spectrum is activated through the coupling in the asymmetric elements when the symmetry of two slot-structures is broken. Moreover, the strength and width of the reflectance transparency peak can be tuned by controlling the asymmetric degree or spacing of two slot-structures. In addition, the presence of the reflectance transparency window is also accompanied by slow-light effect, where its group velocity is reduced by a factor of over 100. Therefore, this complementary metamaterial could have the potential applications in slow-light and filtering devices.
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