石墨烯共振微结构完美光吸收响应及其准定量光电调控研究

本项目拟通过研究金属等离激元与石墨烯共振单元之间的耦合效应，掌握实现光谱吸收效率高、共振模式带宽窄且便于光电调控的石墨烯微结构体系及其物理机制，探索其在新型光电功能材料与器件方面的潜在应用。主要内容包括：1）设计石墨烯共振微结构，研究谐振单元的共振模式与金属等离激元在空间和频域上的耦合效应，给出完美光吸收响应的物理机制；2）系统分析石墨烯谐振单元的对称破缺、金属微腔空间非对称分布的共振响应特性及其杂化耦合效应，修正和完善实现超窄带共振吸收的理论模型；3）深入研究石墨烯微结构光谱上的窄带完美光吸收与空间上的电磁场超强局域特性在实现全光和电学准定量调控过程中的性能响应及其内在物理过程，推动石墨烯完美光吸收器在全光开关、光电调控模块等领域的应用探索。

This project is with the purpose to master the near-unity absorption and the resonant narrowband absorption with the ability to be manipulated quantitatively by the opto-electronic methods for the graphene microstructures and the intrinsic physical mechanism. The potential applications in these novel graphene absorbers will also be investigated for the new optoelectronic functional materials and devices. The main contents include: 1) to design the graphene microstructure and study the resonant modes and their coupling to the metallic plasmons in the spatial and frequency regions, to show the mechanism for the perfect light absorption; 2) to analyse the resonant behaviors and the hybridized coupling effects for the symmetry-breaking and the asymmetrical distribution of the metallic micro-cavity, to improve the theoretical model of the ultra-narrowband resonant absorption; 3) to investigate the physical process for the narrowband perfect light absorption of the graphene microstructure and the spatially distributed electromagnetic field in the confined area and their relationship to the realization of all-optical and electrical quantitative manipulation, and the properties as well the intrinsic physical process, to promote the applications with the graphene perfect light absorbers in the all-optical switching and optoelectronic modulators, etc.