Systematically designed broadband terahertz metasurfaces

Xiaolong You; Christophe Fumeaux; Withawat Withayachumnankul

doi:10.1117/12.2589637

12 April 2021 Systematically designed broadband terahertz metasurfaces

Xiaolong You, Christophe Fumeaux, Withawat Withayachumnankul

Proceedings Volume 11725, Next-Generation Spectroscopic Technologies XIV; 117250C (2021) https://doi.org/10.1117/12.2589637
Event: SPIE Defense + Commercial Sensing, 2021, Online Only

Abstract

We propose an antireflection metasurface and a transmissive half-wave plate that are designed based on an extended semi-analytical approach. Simulations suggest that the antireflection metasurface can effectively suppress the reflection at an air-silicon interface to a level lower than −20 dB, while the transmission magnitude is higher than −0.2 dB from 203 to 357 GHz. Besides, the half-wave plate can maintain a simulated output wave extinction ratio above 15 dB from 219 to 334 GHz with a cross-polarization transmission higher than −1.4 dB. Importantly, the employed approach is capable of designing various metasurfaces to further explore the potential of terahertz waves.

Conference Presentation

Citation Download Citation

Xiaolong You, Christophe Fumeaux, and Withawat Withayachumnankul "Systematically designed broadband terahertz metasurfaces", Proc. SPIE 11725, Next-Generation Spectroscopic Technologies XIV, 117250C (12 April 2021); https://doi.org/10.1117/12.2589637

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