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Analogue of electromagnetically induced transparency in a terahertz metamaterial

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Chiam, Sher-Yi, Singh, Ranjan, Rockstuhl, Carsten, Lederer, Falk, Zhang, Weili, Bettiol, Andrew A.·2009·Physical Review B

Abstract

We experimentally demonstrate at terahertz frequencies that a planar metamaterial exhibits a spectral response resembling electromagnetically induced transparency. The metamaterial unit cell consists of a split ring surrounded by another closed ring where their dimensions are such that their excitable lowest order modes have identical resonance frequencies but very different lifetimes. Terahertz time-domain spectroscopy verifies that the interference of these two resonances results in a narrow transparency window located within a broad opaque region. In contrast to previous studies this enhanced transmission is achieved by independently exciting two resonances in which their coupling to the radiation field, and thus their linewidth, differs strongly. Rigorous numerical simulations prove that the transparency window is associated with a large group index and low losses, making the design potentially useful for slow light applications. This experiment opens an avenue to explore quantum-mechanical phenomena using localized resonances in metallic structures.

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Metadata

Authors
Chiam, S.-Y., Singh, R., Rockstuhl, C., Lederer, F., Zhang, W., & Bettiol, A. A.
Venue
Physical Review B
Published
2009-10-26
Volume
80
Issue
15
ISSN
  • 1098-0121 (ISSN-L)
  • 1550-235X
OpenAlex
W2964066738
Cited by
406
References
29
FWCI
11.04
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Analogue of electromagnetically induced transparency in a terahertz metamaterial. https://app.cochat.ai/papers/10.1103/physrevb.80.153103
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Chiam, S.-Y., Singh, R., Rockstuhl, C., Lederer, F., Zhang, W., & Bettiol, A. A. (2009). Analogue of electromagnetically induced transparency in a terahertz metamaterial. Physical Review B. https://doi.org/10.1103/physrevb.80.153103

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