摘要
金属/介质/金属光栅结构是一种典型的光谱调控结构,在目标隐身领域具有潜在的应用价值,研究该结构光谱调控机理对目标表面结构设计具有重要意义。从电磁场理论出发,利用表面等离子激元的色散关系,在结构色散关系的基础上,建立金属/介质/金属光栅结构共振频率的预测模型,通过分析电磁场分布,揭示金属/介质/金属光栅结构中磁极化效应的物理机理。研究结果表明,利用金属/介质/金属光栅结构中的磁极化效应是由内等离子激元的耦合产生,色散关系可以预测该结构表面的共振频率。
Metal/insulator/metal grating structure is a typical structure for spectral control and is promising in the field of target stealth.The investigation on the spectral control mechanism of this kind of structure is important to the design of structured surface of target.Therefore,the prediction model of resonance frequency of metal/insulator/metal grating structure is established using electromagnetic theory and dispersion relation of surface plasmon polaritons.The electromagnetic field distributions of structured surface are analyzed to reveal the physical mechanism of the magnetic polarization phenomenon in metal/insulator/metal grating structure.The results indicate that the magnetic polarization effect are induced by the coupling of internal surface plasmon polaritons.The resonance frequency can be predicted by the dispersion relation of MIM structured surface.
作者
张玉涛
岳慧
林嘉轩
ZHANG Yu-tao;YUE Hui;LIN Jia-xuan(Science and Technology on Electromagnetic Scattering Laboratory,Shanghai 200438,China)
出处
《制导与引信》
2018年第4期33-37,共5页
Guidance & Fuze
关键词
光栅结构
磁极化
等离子激元
grating structure
magnetic polarization
surface plasmon polaritons
