Version 1
: Received: 3 September 2020 / Approved: 5 September 2020 / Online: 5 September 2020 (03:57:06 CEST)
How to cite:
Hu, D.; Meng, T.; Wang, H.; Ma, Y. A Tunable Broadband Terahertz Absorber Based on Plasmon Hybridization in Monolayer Graphene Ring Arrays. Preprints2020, 2020090109
Hu, D.; Meng, T.; Wang, H.; Ma, Y. A Tunable Broadband Terahertz Absorber Based on Plasmon Hybridization in Monolayer Graphene Ring Arrays. Preprints 2020, 2020090109
Hu, D.; Meng, T.; Wang, H.; Ma, Y. A Tunable Broadband Terahertz Absorber Based on Plasmon Hybridization in Monolayer Graphene Ring Arrays. Preprints2020, 2020090109
APA Style
Hu, D., Meng, T., Wang, H., & Ma, Y. (2020). A Tunable Broadband Terahertz Absorber Based on Plasmon Hybridization in Monolayer Graphene Ring Arrays. Preprints. https://doi.org/
Chicago/Turabian Style
Hu, D., Hongyan Wang and Yongkang Ma. 2020 "A Tunable Broadband Terahertz Absorber Based on Plasmon Hybridization in Monolayer Graphene Ring Arrays" Preprints. https://doi.org/
Abstract
Graphene as a new two-dimensional material can be utilized to design tunable optical devices owing to its exceptional physical properties such as high mobility and tunable conductivity. In this paper, we present the design and analysis of a tunable broadband terahertz absorber based on periodic graphene ring arrays. Due to plasmon hybridization modes excited in the graphene ring, the proposed structure achieves a broad absorption bandwidth with more than 90% absorption in the frequency range of 0.88-2.10THz under normal incidence and its relative absorption bandwidth is about 81.88%. Meanwhile, it exhibits polarization-insensitive behavior and maintains high absorption over 80% when incident angle is up to 45º for both TE and TM polarizations. Additionally, the peak absorption rate of the absorber can be tuned from 21% to nearly 100% by increasing the graphene’s chemical potential from 0eV to 0.9eV. Such a design can have some potential applications in various terahertz devices, such as modulators, detectors, spatial filters.
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
