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RETRACTED: Ultra-wideband terahertz absorber based on graphene modulation

Xiaogang Li, Guang Feng, and Suben Lin

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Abstract

Here we propose an ultra-wideband terahertz absorber (UWTA), which is composed of substrate, dielectric, and five-layer graphenes. By changing the chemical potential of graphene, the absorption coefficient of UWTA is larger than 0.9 from 1.51–8.25 THz. The absorption bandwidth is 6.74 THz. The relative bandwidth is 138.1%, and the modulation depth is 78.7%. Meanwhile, the number of each layer of graphene can be adjusted to achieve high absorption bandwidth, relative bandwidth, and modulation depth. Besides, due to the tunable chemical potential of graphene, the absorption coefficient can be adjusted to make up the manufacturing error.

© 2021 Optical Society of America

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Retraction

This article has been retracted. Please see:
Xiaogang Li, Guang Feng, and Suben Lin, "Ultra-wideband terahertz absorber based on graphene modulation: retraction," Appl. Opt. 60, 9379-9379 (2021)
https://opg.optica.org/ao/abstract.cfm?uri=ao-60-30-9379
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Ultra-wideband terahertz absorber based on graphene modulation: retraction

Xiaogang Li, Guang Feng, and Suben Lin
Appl. Opt. 60(30) 9379-9379 (2021)

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Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

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