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Opt Express. 2009 Sep 14;17(19):16527-34. doi: 10.1364/OE.17.016527.

Broadband resonant terahertz transmission in a composite metal-dielectric structure.

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  • 1Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore 117542, Singapore. phyhanj@nus.edu.sg


We present a systematic numerical study of a metal-dielectric-metal sandwich plasmonic structure for broadband resonant transmission at terahertz frequencies. The proposed structure consists of periodic slotted metallic arrays on both sides of a thin dielectric substrate and is demonstrated to exhibit a broad passband transmission response. Various design considerations have been investigated to exploit their influence on the transmission passband width and the center resonance frequency. The structure ensures a broadband transmission over a wide range of incident angles.

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