Printable and low-cost perfect terahertz absorber realized by a laser-induced graphene metasurface

Terahertz (THz) absorbers are highly desired with the rapid development of THz technology. Although metasurface-based absorbers can realize perfect absorption, their fabrication often requires complicated micro-nano-processing with a high cost. In this paper, fast printable and low-cost metasurface...

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Published in:Optics letters 2023-10, Vol.48 (19), p.5009-5012
Main Authors: Dong, Yan, Wang, Zongyuan, Xiong, Chenjie, Deng, Bowen, Hu, Bin
Format: Article
Language:English
Subjects:
Absorbers
Dichroism
Graphene
Low cost
Metasurfaces
Resonant frequencies
Terahertz frequencies
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description Terahertz (THz) absorbers are highly desired with the rapid development of THz technology. Although metasurface-based absorbers can realize perfect absorption, their fabrication often requires complicated micro-nano-processing with a high cost. In this paper, fast printable and low-cost metasurface absorbers based on a laser-induced graphene (LIG) technique are proposed. Experimental results demonstrate that these two metasurfaces can achieve maximum absorptions of 99.3% and 99.9% at their resonant frequencies in an incident angle range of ±55°. Fabrication of a metasurface with a size of 1 × 1 cm costs only 11 s. The absorbers may be applied in THz dichroism and communications.
doi_str_mv 10.1364/OL.499332
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source Optica Publishing Group Journals
subjects Absorbers
Dichroism
Graphene
Low cost
Metasurfaces
Resonant frequencies
Terahertz frequencies
title Printable and low-cost perfect terahertz absorber realized by a laser-induced graphene metasurface
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