新型超构材料调控电磁波位相、偏振和传播特性的物理机制

本项目拟围绕亚波长金属微纳结构制备和光学性质，利用超薄电化学沉积和模板辅助技术制备大面积均匀二维单晶金属周期微纳结构；利用飞秒脉冲激光双光子聚合三维直写成型技术以及平面微加工叠层技术制备若干新型三维金属周期微纳结构；利用谱学表征手段并结合计算机模拟仿真，从实验和理论两方面深入研究电磁波在这些金属微纳结构中传播时元激发的产生和演化规律，探讨这些体系中电共振和磁共振与元激发（如表面等离激元与磁等离极化激元等）的关系，通过金属微纳结构的设计和参数优化，实现对电磁波位相、偏振态、传播方向和振幅在更宽频段上的有效调控，为集成光学的发展提供新原理、新结构和新型材料与器件。我们期望通过本项目的实施，能够更加清晰地认识和理解金属超构材料中元激发的产生与电磁响应规律，揭示超构材料体系中若干新现象和新效应的物理内涵和控制技术，探索以元激发作为新一代信息载体的可能性。

This project is targeting on the physics mechanism of metamaterials in tuning the phase, polarization, amplitude and transmission of electromagnetic waves. A novel ultratin electrochemical growth technique and a template-assisted electrochemical growth method will be applied to self-organize metallic periodic microstructures over a large area; a 3D focus-point-scanning bi-photon polymerization technique, together with conventional microfabrication approaches will also be applied to fabricate metallic 3D/2D structures. With spectrum characterization, FPA imaging, and simulations/calculations, we intend to understand the excitation, transportation and evolution of surface plasmon polaritons in these structures, explore the relation of electric resonance, magnetic resonance and their corresponding elementary excitations, etc.. By designing the sub-wavelength metallic microstructures and optimize the structural parameters, we expect to gain an efficient control of the phase, polarization, amplitude, and transmission of light over a broad frequency range.