Theoretical research on a vanadium dioxide-based terahertz metamaterial supporting switchable dual functions of broadband absorption and polarization conversion

IF 1.8 4区物理与天体物理 Q3 OPTICS

The European Physical Journal D Pub Date : 2026-05-25 DOI:10.1140/epjd/s10053-026-01177-0

Ming Ji, Hongze Li, Danqi Li, Qi Liang, Jinping Tian, Rongcao Yang

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Abstract

A switchable dual-functional terahertz (THz) metamaterial that can switch between broadband absorption and cross-polarization conversion is designed and investigated based on the phase transition characteristics of vanadium dioxide (\({\text{VO}}_{{2}}\)). When \({\text{VO}}_{{2}}\) is in its metallic state, the metamaterial functions as a broadband absorber, exhibiting an absorption rate exceeding 90% and a relative bandwidth (RBW) of 90% within the range of 2.16–5.71 THz. When \({\text{VO}}_{{2}}\) is in its insulating state, the device operates as a broadband polarization converter, achieving a polarization conversion ratio (PCR) exceeding 90% and a relative bandwidth (RBW) of 131% within the range of 1.25–6.02 THz. In addition, for these two working modes, the device exhibits acceptable tolerance toward incident angle and polarization angle. These advantages make the proposed \({\text{V}\text{O}}_{2}\)-based dual-functional metamaterial device have potential application prospects in multiple THz fields such as absorption, polarization conversion, imaging, and so on.

Graphical abstract

The alternative text for this image may have been generated using AI.

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一种支持宽带吸收和偏振转换双重功能可切换的二氧化钒基太赫兹超材料的理论研究

基于二氧化钒的相变特性，设计并研究了一种可在宽带吸收和交叉极化转换之间切换的双功能太赫兹（THz）超材料（\({\text{VO}}_{{2}}\)）。当\({\text{VO}}_{{2}}\)处于金属态时，该超材料起宽带吸收剂的作用，其吸收率超过90％% and a relative bandwidth (RBW) of 90% within the range of 2.16–5.71 THz. When \({\text{VO}}_{{2}}\) is in its insulating state, the device operates as a broadband polarization converter, achieving a polarization conversion ratio (PCR) exceeding 90% and a relative bandwidth (RBW) of 131% within the range of 1.25–6.02 THz. In addition, for these two working modes, the device exhibits acceptable tolerance toward incident angle and polarization angle. These advantages make the proposed \({\text{V}\text{O}}_{2}\)-based dual-functional metamaterial device have potential application prospects in multiple THz fields such as absorption, polarization conversion, imaging, and so on.Graphical abstractThe alternative text for this image may have been generated using AI.

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来源期刊

The European Physical Journal D 物理-物理：原子、分子和化学物理

CiteScore

3.10

自引率

11.10%

发文量

213

审稿时长

3 months

期刊介绍： The European Physical Journal D (EPJ D) presents new and original research results in: Atomic Physics; Molecular Physics and Chemical Physics; Atomic and Molecular Collisions; Clusters and Nanostructures; Plasma Physics; Laser Cooling and Quantum Gas; Nonlinear Dynamics; Optical Physics; Quantum Optics and Quantum Information; Ultraintense and Ultrashort Laser Fields. The range of topics covered in these areas is extensive, from Molecular Interaction and Reactivity to Spectroscopy and Thermodynamics of Clusters, from Atomic Optics to Bose-Einstein Condensation to Femtochemistry.