Enhanced spatial terahertz modulation based on graphene metamaterial
The plasmonic mode in graphene metamaterial provides a new approach to manipulate terahertz （THz） waves. Graphene-based split ring resonator （SRR） metamaterial is proposed with the capacity for modulating trans- mitted THz waves under normal and oblique incidence. Here, we theoretically demonstrate...
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| Published in: | Chinese optics letters Vol. 15; no. 5; pp. 58 - 61 |
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| Main Author: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
10-05-2017
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| Online Access: | Get full text |
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| Summary: | The plasmonic mode in graphene metamaterial provides a new approach to manipulate terahertz （THz） waves. Graphene-based split ring resonator （SRR） metamaterial is proposed with the capacity for modulating trans- mitted THz waves under normal and oblique incidence. Here, we theoretically demonstrate that the resonant strength of the dipolar mode can be significantly enhanced by enlarging the arm-width of the SRR and by stack- ing graphene layers. The principal mechanism of light-matter interaction in graphene metamaterial provides a dynamical modulation based on the controllable graphene Fermi level. This graphene-based design paves the way for a myriad of important THz applications, such as optical modulators, absorbers, polarizers, etc. |
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| Bibliography: | The plasmonic mode in graphene metamaterial provides a new approach to manipulate terahertz （THz） waves. Graphene-based split ring resonator （SRR） metamaterial is proposed with the capacity for modulating trans- mitted THz waves under normal and oblique incidence. Here, we theoretically demonstrate that the resonant strength of the dipolar mode can be significantly enhanced by enlarging the arm-width of the SRR and by stack- ing graphene layers. The principal mechanism of light-matter interaction in graphene metamaterial provides a dynamical modulation based on the controllable graphene Fermi level. This graphene-based design paves the way for a myriad of important THz applications, such as optical modulators, absorbers, polarizers, etc. 31-1890/O4 Dandan Sun, Mengqi Wang, Yuanyuan Huang, Vixuan Zhou, Mei Qi, Man Jiang, and Zhaoyu Ren（State Key Lab Incubation Base of Photoelectric Technology and Functional Materials, International Collaborative Center on Photoelectric Technology and Nano Functional Materials, School of Physics, Institute of Photonics Photon-Technology, Northwest University, Xi＇an 710069, China） |
| ISSN: | 1671-7694 |
| DOI: | 10.3788/COL201715.051603 |