Journal
SUPERLATTICES AND MICROSTRUCTURES
Volume 114, Issue -, Pages 355-360Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.spmi.2017.12.046
Keywords
Absorption; Photonic crystal; Graphene-based hyperbolic metamaterials
Categories
Funding
- project of Shaanxi science and technology [2016KTZDGY05-02]
- Launching Scientific Research Funds for Doctors [2014-B-04]
- Shanxi Provincial Science Foundation [201601D021029, 201701D221096]
- Science and Technology Project of Datong City [2017131]
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A broadband absorber which was proposed by one dimensional photonic crystal (1DPC) containing graphene-based hyperbolic metamaterials (GHMM) is theoretically investigated. For TM mode, it was demonstrated to absorb roughly 90% of all available electromagnetic waves at a 14THz absorption bandwidth at normal incidence. The absorption bandwidth was affected by Fermi energy and thickness of dielectric layer. When the incident angle was increased, the absorption value decreased, and the absorption band had a gradual blue shift. These findings have potential applications for designing broadband optoelectronic devices at mid-infrared and THz frequency range. (C) 2017 Elsevier Ltd. All rights reserved.
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