Wide-angle broadband terahertz metamaterial absorber with a multilayered heterostructure

In this paper, a wide-angle broadband perfect absorber is composed of a periodical metamaterial heterostructure. The structure is designed according to the concept that the metamaterial absorber's resonant frequency range can be manipulated by adjusting the filling factor of a bi-insulator hete...

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Veröffentlicht in:Applied Optics 2017-05, Vol.56 (15), p.4388-4391
Hauptverfasser: Fan, Junxing, Xiao, Dong, Wang, Qiong, Liu, Qiang, Ouyang, Zhengbiao
Format: Artikel
Sprache:eng
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Zusammenfassung:In this paper, a wide-angle broadband perfect absorber is composed of a periodical metamaterial heterostructure. The structure is designed according to the concept that the metamaterial absorber's resonant frequency range can be manipulated by adjusting the filling factor of a bi-insulator heterostructure. The calculated results reveal that the four-layer herostructure has four perfect absorption peaks at the range of the terahertz frequency band. The related absorption bandwidth is 300 GHz and the average absorptivity is 98.6%. At the same time, the structure is insensitive to the incident angle.
ISSN:0003-6935
2155-3165
1539-4522
DOI:10.1364/AO.56.004388