Terahertz imaging using C-shaped metallic metasurface-based optics

R. Ivaškevičiūtė-Povilauskienė; V. Čižas; E. Nacius; I. Grigelionis; K. Redeckas; K. Stanaitis; S. Orlov; G. Valušis; L. Minkevičius

doi:10.1117/12.3016992

18 June 2024 Terahertz imaging using C-shaped metallic metasurface-based optics

R. Ivaškevičiūtė-Povilauskienė, V. Čižas, E. Nacius, I. Grigelionis, K. Redeckas, K. Stanaitis, S. Orlov, G. Valušis, L. Minkevičius

Author Affiliations +

Proceedings Volume 12994, Terahertz Photonics III; 129940G (2024) https://doi.org/10.1117/12.3016992
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Abstract

This study introduces a stainless steel-based complementary C-shaped single split ring resonator (CSRR) metasurface designed for Terahertz (THz) imaging applications. The CSRR metasurface was created from a 25 μm thick stainless-steel foil using laser ablation, and serves as a zone plate, allowing precise manipulation of 100 GHz radiation. The investigation involved beam-shaping characterization of the metasurface comprising CSRRs of different geometrical parameters and examining the bending influence on the metasurface's functionality, revealing a minimal reduction in beam intensity. Additionally, the proposed metasurface demonstrated the ability to control polarization by sweeping its rotational angle, enhancing THz polarization-resolved imaging capabilities. Practical demonstrations showcase the metasurface's suitability for real-life scenarios, highlighting its value in THz imaging systems.

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(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

R. Ivaškevičiūtė-Povilauskienė, V. Čižas, E. Nacius, I. Grigelionis, K. Redeckas, K. Stanaitis, S. Orlov, G. Valušis, and L. Minkevičius "Terahertz imaging using C-shaped metallic metasurface-based optics", Proc. SPIE 12994, Terahertz Photonics III, 129940G (18 June 2024); https://doi.org/10.1117/12.3016992

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