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Tunable, angle and polarization-insensitive broadband absorber

Jiang, X; Yang, J; Zhang, Z; Zhang, J; Xie, W; (2020) Tunable, angle and polarization-insensitive broadband absorber. In: Li, B and Wang, X and Yi, YS, (eds.) 2019 International Conference on Optical Instruments and Technology: Micro/Nano Photonics: Materials and Devices. IEEE: Beijing, China. Green open access

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Abstract

Using the principle of Surface Plasmons Polaritons, we propose a graphene broadband terahertz absorption structure that achieves the tunable absorption of electromagnetic waves. In our absorption structure, the method of patterning graphene is used to realize continuous broadband absorption from 0.5THz to 2.1THz. The absorption which is more than 50% reaches 1.1THZ, especially the structure designed here has three plasmonic resonance peaks which above 98% at 0.79THz, 1.18THz and 1.35THz, respectively. In addition, the symmetry in the pattern design consider that our absorption structure is not sensitive to the polarization and incident angle. Due to a series of excellent characteristics of the absorption structure, it may play an important role in the field of aircraft stealth, absorber, and light wave modulation.

Type: Proceedings paper
Title: Tunable, angle and polarization-insensitive broadband absorber
Event: 2019 International Conference on Optical Instruments and Technology, 2019
Open access status: An open access version is available from UCL Discovery
DOI: 10.1117/12.2547546
Publisher version: https://doi.org/10.1117/12.2547546
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Engineering Science Faculty Office
URI: https://discovery.ucl.ac.uk/id/eprint/10095062
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