Great localized field enhancement in terahertz antenna composed of hyperbolic metamaterials

Cong Cheng; YuanFu Lu; Rui Zhang; Guangyuan Li

doi:10.1117/12.2537263

18 November 2019 Great localized field enhancement in terahertz antenna composed of hyperbolic metamaterials

Cong Cheng, YuanFu Lu, Rui Zhang, Guangyuan Li

Proceedings Volume 11196, Infrared, Millimeter-Wave, and Terahertz Technologies VI; 111960I (2019) https://doi.org/10.1117/12.2537263
Event: SPIE/COS Photonics Asia, 2019, Hangzhou, China

Abstract

We propose a novel type of bowtie terahertz antenna based on hyperbolic metamaterials that are composed of multilayers of Indium Antimonide (InSb) and SiO₂. The InSb-SiO₂ multilayers have hyperbolic dispersion at terahertz frequency range. Compared with the conventional bowtie antenna composed of gold, fully-vectorial simulations show that, the localized field enhancement in the proposed structure is 16 times of that for the gold antenna. We further reveal that this great field enhancement attributes to the significantly enhanced out-of-plane electric field component in the hyperbolic metamaterial antenna. We expect this work will find applications in terahertz sensors, detectors, and nonlinear devices.

Citation Download Citation

Cong Cheng, YuanFu Lu, Rui Zhang, and Guangyuan Li "Great localized field enhancement in terahertz antenna composed of hyperbolic metamaterials", Proc. SPIE 11196, Infrared, Millimeter-Wave, and Terahertz Technologies VI, 111960I (18 November 2019); https://doi.org/10.1117/12.2537263

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