基于金属-介质-金属的可调谐窄带完美吸收的研究  

Tunable narrow-band perfect absorber based on metal-dielectric-metal

作　　者：王晓坤[1] 李周[2] 梁国龙[2] WANG Xiao-kun;LI Zhou;LIANG Guo-long(Aviation Operations Service College,Air Force Aviation University,Changchun 130022,China;Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Key Laboratory of Space-based Dynamic&Rapid Optical Imaging Technology,Chinese Academy of Sciences,Changchun 130033,China)

机构地区：[1]空军航空大学航空作战勤务学院,长春130022 [2]中国科学院长春光学精密机械与物理研究所中国科学院天基动态快速光学成像技术重点实验室,吉林长春130033

出　　处：《中国光学（中英文）》2024年第2期263-270,共8页Chinese Optics

基　　金：国家自然科学基金(No.62105330)。

摘　　要：为了实现窄带完美吸收,本文提出了一种简单的三层金-二氧化硅-金薄膜(MDM)结构。通过电磁波时域差分算法(FDTD)进行模拟仿真和理论计算,详细分析了该结构的可调谐吸收特性,同时建立了理论模型,分析了其中存在的电磁模式以及窄带完美吸收的物理机制。首先,利用电磁波时域差分算法和传输矩阵算法(TMM)对该结构进行了理论计算,详细地分析了各个结构参数对吸收光谱的影响。然后,对该结构形成的窄带完美吸收物理机制进行了分析讨论。最后,利用磁控溅射制备手段,成功制备了三层结构的样片。实验观测到的结果与理论仿真一致。实验结果表明:本文提出的窄带完美吸收结构,最窄带宽约为21 nm,最高吸收可达99.51%,基本实现了窄带完美吸收。本文研究成果为相关应用奠定了基础。To achieve perfect narrowband absorber,we proposed a simple three-layer thin film(MDM)structure and developed a theoretical model.A comprehensive investigation was conducted on this structure through a combination of simulations and theoretical calculations.First,we executed theoretical calculations on the structure using both finite-difference time-domain algorithm(FDTD)and transfer matrix algorithm.The effects of several structural parameters on the absorption spectrum were analyzed in this study.We analyzed and discussed the physical mechanism of narrow band perfect absorber structure caused by the structure.Finally,we successfully used magnetron sputtering as a fabrication method to produce three-layer samples.The experimental results were consistent with the theoretical simulation.Our proposed structure for a narrowband perfect absorber can achieve a maximum narrow bandwidth of approximately 21 nm and a maximum absorption of 99.51%.We establish a strong basis for related applications by achieving perfect narrowband absorption.

关 键 词：薄膜 完美吸收 超薄薄膜 

分 类 号：TP394.1[自动化与计算机技术—计算机应用技术] TH691.9[自动化与计算机技术—计算机科学与技术]