Reconfigurable high-Q terahertz filtering of VO2-based metamaterials using optical tunneling

doi:10.1016/j.rinp.2022.105740

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	Reconfigurable high-Q terahertz filtering of VO2-based metamaterials using optical tunneling
	X. Y. Liu; Y. N. Xie; W. Chen; S. A. Khan; J. Zhou; J. L. Qiu and J. F. Zhu
	2022
发表期刊	Results in Physics
ISSN	2211-3797
卷号	39 页码:6
摘要	Up to date, reconfigurable terahertz (THz) band-pass filters based on the design of metamaterials with vanadium dioxide (VO2) have been investigated extensively. However, VO2-based THz metamaterials with high-quality tunable narrowband transmission and good stop-band rejection have yet to be reported, which are essential for THz wave filtering components or systems. Here, we propose a reconfigurable filter in combination with a dielectric metastructure and a VO2 thin film. Utilizing the optical tunneling effects of a cavity layer, the filter has a high band-pass transmission up to 98% at 0.246 THz with a narrow bandwidth of 0.0009 THz, an ultra-high Q-factor of 273, and two broad nearly-suppressed sidebands. The transmission intensity can be modulated by the phase transition of VO2, and the modulation depth is as high as 96.4%. By efficiently tuning the cavity layer thickness, the filter can be designed for a series of transmission wavelengths and further accomplish the switch between the narrow band-pass filtering and wideband reflection. Moreover, the manipulation of the incident angle and polarization can be adopted as an additional degree to achieve a similar switching function. Our study implies a potential for developing various THz applications, where reconfigurable high-Q THz filtering is required.
DOI	10.1016/j.rinp.2022.105740
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收录类别	sci
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/67027
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	X. Y. Liu,Y. N. Xie,W. Chen,et al. Reconfigurable high-Q terahertz filtering of VO2-based metamaterials using optical tunneling[J]. Results in Physics,2022,39:6.
APA	X. Y. Liu,Y. N. Xie,W. Chen,S. A. Khan,J. Zhou,&J. L. Qiu and J. F. Zhu.(2022).Reconfigurable high-Q terahertz filtering of VO2-based metamaterials using optical tunneling.Results in Physics,39,6.
MLA	X. Y. Liu,et al."Reconfigurable high-Q terahertz filtering of VO2-based metamaterials using optical tunneling".Results in Physics 39(2022):6.

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