期刊
SUPERLATTICES AND MICROSTRUCTURES
卷 120, 期 -, 页码 427-435出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.spmi.2018.05.059
关键词
Far-infrared; Surface plasmon resonance (SPR); Absorber; Metamaterial; Graphene
资金
- National Natural Science Foundation of China [51606158, 60908023, 11375159]
- Longshan academic talent research supporting program of SWUST [17LZX452]
- Postgraduate Innovation Fund Project by Southwest University of Science and Technology [18ycx034]
In recent years, as an important plasmonic nanomaterial, graphene has become the focus of research. In our research, we design a tunable plasmonic absorber composed of periodic H-shaped graphene arrays in the far-infrared and terahertz (THz) bands. We numerically investigate the structure parameters and the chemical potential of graphene that influence the optical properties of the periodic H-shaped graphene arrays. Compared with periodic H-shaped graphene arrays, under the same TM polarization, the complementary structure has higher absorption. In addition, the polarization sensitivity of the H-shaped graphene arrays is also investigated. Our research not only investigates the plasmonic resonance absorption characteristics, but also implies important potential applications in integrated optical circuits such as optical storage, ultra fast plasmonic switches, high performance filters and modulators.
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