Switchable and Tunable Terahertz Metamaterial Based on Vanadium Dioxide and Photosensitive Silicon

A switchable and tunable terahertz (THz) metamaterial based on photosensitive silicon and Vanadium dioxide (VO(2)) was proposed. By using a finite-difference time-domain (FDTD) method, the transmission and reflective properties of the metamaterial were investigated theoretically. The results imply t...

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Detalles Bibliográficos
Autores principales: Zhang, Xin, Wang, Guan, Liu, Jia, Zuo, Shiyi, Li, Meichen, Yang, Shuang, Jia, Yang, Gao, Yachen
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10385666/
https://www.ncbi.nlm.nih.gov/pubmed/37513155
http://dx.doi.org/10.3390/nano13142144
Descripción
Sumario:A switchable and tunable terahertz (THz) metamaterial based on photosensitive silicon and Vanadium dioxide (VO(2)) was proposed. By using a finite-difference time-domain (FDTD) method, the transmission and reflective properties of the metamaterial were investigated theoretically. The results imply that the metamaterial can realize a dual electromagnetically induced transparency (EIT) or two narrow-band absorptions depending on the temperature of the VO(2). Additionally, the magnitude of the EIT and two narrow-band absorptions can be tuned by varying the conductivity of photosensitive silicon (PSi) via pumping light. Correspondingly, the slow-light effect accompanying the EIT can also be adjusted.

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