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High-performance terahertz refractive index sensor based on a hybrid graphene Tamm structure
J. Hu; M. Li; Z. Wang; Z. Hu; J. Wang; S. Khakhomov and I. Semchenko
2021
Source PublicationJournal of the Optical Society of America B: Optical Physics
ISSN7403224
Volume38Issue:9Pages:2543-2550
AbstractIn recent years, the research on tunable and high-performance terahertz devices has attracted widespread attention. In this paper,we propose a novel refractive index sensor consisting of monolayer graphene and multilayer photonic crystal with a defect layer. It is found that Tamm plasmon polaritons can be excited at the top graphene interface, which can strongly interact with the defect mode in this coupled structure. The results of numerical simulation demonstrate that the coupling can be either tuned by adjusting the geometric parameters or actively controlled by the chemical potential in graphene as well as the incident angle of light, allowing for tunable dual-band perfect absorption with strong interaction.Moreover, the resonance frequency of the defect mode is sensitive to the changes of the ambient refractive index. The sensitivity and figure of merit of this device as a sensor can reach 1.01 THz per refractive index unit (THz/RIU) and 631.2 RIU-1, respectively. In addition to high performance, the sensor does not require phase- or polarization-matching devices, paving the way for the research of optical devices. 2021 Optical Society of America.
DOI10.1364/JOSAB.431912
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Indexed BySCI ; EI
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Document Type期刊论文
Identifierhttp://ir.ciomp.ac.cn/handle/181722/65298
Collection中国科学院长春光学精密机械与物理研究所
Recommended Citation
GB/T 7714
J. Hu,M. Li,Z. Wang,et al. High-performance terahertz refractive index sensor based on a hybrid graphene Tamm structure[J]. Journal of the Optical Society of America B: Optical Physics,2021,38(9):2543-2550.
APA J. Hu,M. Li,Z. Wang,Z. Hu,J. Wang,&S. Khakhomov and I. Semchenko.(2021).High-performance terahertz refractive index sensor based on a hybrid graphene Tamm structure.Journal of the Optical Society of America B: Optical Physics,38(9),2543-2550.
MLA J. Hu,et al."High-performance terahertz refractive index sensor based on a hybrid graphene Tamm structure".Journal of the Optical Society of America B: Optical Physics 38.9(2021):2543-2550.
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