Terahertz metamaterial absorber based on asymmetric dual “U” structure

Jun Li; Xing Li; Zhifu Dong

doi:10.1117/12.3052631

12 December 2024 Terahertz metamaterial absorber based on asymmetric dual “U” structure

Jun Li, Xing Li, Zhifu Dong

Author Affiliations +

Proceedings Volume 13446, Sixth International Conference on Optoelectronic Science and Materials (ICOSM 2024); 134460T (2024) https://doi.org/10.1117/12.3052631
Event: 6th International Conference on Optoelectronic Science and Materials (ICOSM 2024), 2024, Hefei, China

Abstract

In the study, a terahertz metamaterial absorber with an asymmetric dual U-shaped structure on top of a polyimide dielectric spacer is proposed. The calculated simulation results indicated that the structure provides an absorption peaks over 90% at the peak frequency. By adjusting the length of one of the two-parallel U-shaped metal strip, the structure can provide a wide tuning range in 0.95 THz. Geometrical parameter analysis has been carried out to justify the similarity of the results of adjusting each metal strip. Furthermore, the tuning range can reach 2.06 THz by equivalently adjusting the length of the two sides, and the absorption rate of each peak frequency point is higher than 90%. The study of this dual asymmetric U-shaped structure will have applications in filtering, detection and terahertz tunability.

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

Citation Download Citation

Jun Li, Xing Li, and Zhifu Dong "Terahertz metamaterial absorber based on asymmetric dual “U” structure", Proc. SPIE 13446, Sixth International Conference on Optoelectronic Science and Materials (ICOSM 2024), 134460T (12 December 2024); https://doi.org/10.1117/12.3052631

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KEYWORDS

Absorption

Terahertz radiation

Terahertz metamaterials

Electromagnetism

Electromagnetic metamaterials

Metals

Electric fields

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