Ultra-high sensitivity terahertz sensor based on a five-band absorber

Autor:	Wenfeng Xiao, Yanghong Ou, Shiyu Wang, Shuai Wang, Yanzi Meng, Xiang Zhai, Shengxuan Xia, Lingling Wang
Rok vydání:	2022
Předmět:	Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials
Zdroj:	Journal of Optics. 24:055102
ISSN:	2040-8986 2040-8978
Popis:	Terahertz sensing is one of the most promising methods for label-free and noninvasive detection of refractive index changes. However, the figure of merit (FOM) of terahertz sensors in practical applications has been low. In this paper, a metamaterial sensor based on simple stacking of gold and silicon dioxide is proposed, through whose structure not only narrow-band absorption with five absorption peaks is realized, but FOM is also improved to 1792. The excellent sensing performance and the mature manufacturing technology of this kind of structure provide a platform for the design of multi-band photodetectors and high-sensitivity sensors.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::25cd2f52efb4fbd093dcac6d6e18c047 https://doi.org/10.1088/2040-8986/ac5b4f Zobrazit plný text záznamu