Terahertz absorber based on vanadium dioxide with high sensitivity and switching capability between ultra-wideband and ultra-narrowband
Qianli Song, Xingxin Cheng, Tao Liu, Yanyu Zhang, Zigang Zhou, Yongjia Yang, Hao Chen, Bin Tang, Jing Chen, Zao Yi
Abstract
materials, and the absorption is more than 99% across 3.64-6.96 THz, and it has excellent characteristics such as robustness. Ultra-narrowband perfect absorption has a quality factor greater than 2200 due mainly to the implementation of symmetrically protected BIC with a sensing sensitivity of 2.575 THz per RIU. Therefore, this research could be widely used in the fields of integrated optical circuits, optoelectronic sensing and perceptual modulation of energy, as well as providing additional design ideas for the design of terahertz multifunctional devices.
Topics & Concepts
Terahertz radiationMaterials scienceNarrowbandOptoelectronicsAbsorption (acoustics)ReconfigurabilityOpticsPhysicsTelecommunicationsComputer scienceComposite materialMetamaterials and Metasurfaces ApplicationsPlasmonic and Surface Plasmon ResearchTerahertz technology and applications