论文标题
石墨烯辅助式荟萃格式：从相干到吸收和反射的角度控制
Graphene-assisted metagrating: from coherent to angular-asymmetric control of absorption and reflection
论文作者
论文摘要
在本文中，我们利用Metagration范例来实现对两端口设备的吸收和反射的连贯控制。采用石墨烯色带作为可调元素，使我们首次实现可重新配置的Metagration，将多元化的相干功能集成到单个平面结构中。可以说的是，建议的设计可以在其周期可调节性提供的多个操作事件角度作为连贯的完美吸收器。此外，我们提出的甲板还能够根据光与光的连贯相互作用与光的连贯相互作用通过细微调节其化学势进行高效的动态束转向，然后研究其兼容性，然后研究其兼容性，以实现线性全光逻辑门。此外，我们使用基于石墨烯的Metagration的概念提出了一种极为不对称的装置，该设备在一侧照明时表现出很高的反射反射，并且从相反的一侧激发了强烈的吸收，与先前的作品相比，设计和制造简单性的增强很大。我们建议的设备的EM响应也可以通过仅调节其石墨烯丝带的化学电位来从强烈不对称的对称行为转换为对称行为。
In this paper, we exploit the metagrating paradigm to achieve coherent control of absorption and reflection in a two-port device. Employing graphene ribbon as a tunable element allows us to, for the first time, realize a reconfigurable metagrating that integrates diversified coherent functionalities into a single planar structure. It is illustrated that the suggested design can behave as a coherent perfect absorber at multiple operating incident angles offered by its period-reconfigurability. Besides, our proposed metagrating is also capable of highly-efficient dynamic beam steering based on the coherent interaction of light with light through finely adjusting its chemical potentials, and its compatibility is then investigated to realize linear all-optical logic gates. Moreover, we use the idea of graphene-based metagrating to put forward an extremely asymmetrical device which exhibits high retroreflection upon illumination from one side and a strong absorption under excitation from the opposite side, revealing a great enhancement in design and fabrication simplicity compared to the previous works. The EM response of our suggested device can also be switched from a strongly asymmetric to a symmetric behavior by merely modulating the chemical potentials of its graphene ribbons.
