基于电介质超材料的中红外超窄带吸波器  

Mid-infrared ultra-narrowband absorber based on dielectric metamaterial

作　　者：廖艳林[1] 周霄鹏 卢一博 赵艳[2] 谌正艮[1] LIAO Yanlin;ZHOU Xiaopeng;LU Yibo;ZHAO Yan;CHEN Zhenggen(Stone Brook Institute at Anhui University,Anhui University,Hefei 230039,China;School of Biomedical Engineering,AnhuiMedical University,Hefei 230032,China)

机构地区：[1]安徽大学纽约石溪学院,安徽合肥230039 [2]安徽医科大学生物医学工程学院,安徽合肥230032

出　　处：《安徽大学学报（自然科学版）》2024年第2期40-45,共6页Journal of Anhui University(Natural Science Edition)

基　　金：安徽省转化医学研究院科研基金资助项目(2023zhyx-C14);安徽省高等学校省级质量工程项目(2022jyxm072)。

摘　　要：电介质超材料因具有极低欧姆损耗受到广泛关注.提出一种基于电介质超材料的中红外超窄带吸波器,该吸波器由顶层电介质微结构、中间层电介质膜和基底金属构成.研究结果表明:该吸波器在中红外波段存在带宽为2.40nm的吸收峰;电场主要分布于顶层硅微结构之间的间隙,导致吸收损耗功率显著降低,进而实现吸收带宽压缩;作为传感器时,在中红外波段该吸波器的品质因数可达80.可见,该吸波器可应用于中红外热辐射光源和高性能传感器.Dielectric metamaterials have received extensive attention because of their extremely low ohmic losses.A mid-infrared ultra-narrowband absorber based on dielectric metamaterial had been proposed.The absorber consisted of a top dielectric microstructure layer,an intermediate dielectric film and a substrate metal.The research results indicated that the absorber had an absorption peak with a bandwidth of 2.40 nm in the mid-infrared band.The electric field was mainly distributed in the gaps between the top silicon microstructures,leading to a significant reduction in absorption loss power and thus the absorption bandwidth compression.When used as a sensor,the quality factor of the absorber in the mid-infrared band could reach 80.Therefore,this absorber could be applied to mid-infrared thermal emitters and high-performance sensors.

关 键 词：超材料 中红外 吸波器 传感器 热辐射源 

分 类 号：TN213[电子电信—物理电子学]