论文标题
根据阶段和幅度控制量化Terahertz的传播
Tailoring Terahertz Propagation by Phase and Amplitude Control in Metasurfaces
论文作者
论文摘要
近年来，在宽阔的电磁频谱上，使用元信息控制波浪传播非常成功。通过编码特殊设计的电磁参数突然变化为阶段和振幅等元时间，可以实现对输出波前的几乎任意控制。由平面结构的单个或多个层构成，元面积在设计和制造方面很简单，因此有望实现许多现实的应用。此外，这种控制概念可以进一步扩展到表面波状态。在这篇综述中，我们介绍了我们最近在能够调整自由空间和表面terahertz波的传播的跨膜上的进展。在介绍了基本概念和理论之后，提出了许多独特的Terahertz Metasurfaces，表明了设计超薄和紧凑的功能性Terahertz组件的能力。
Using metasurfaces to control the wave propagation at will has been very successful over the broad electromagnetic spectrum in recent years. By encoding specially designed abrupt changes of electromagnetic parameters into metasurfaces, such as phase and amplitude, nearly arbitrary control over the output wavefronts could be realized. Constituted by a single- or fewlayer of planar structures, metasurfaces are straightforward in design and fabrication, thus promising many realistic applications. Moreover, such control concept can be further extended to the surface wave regime. In this review, we present our recent progress on metasurfaces capable of tailoring the propagation of both free-space and surface terahertz waves. Following an introduction of the basic concept and theory, a number of unique terahertz metasurfaces are presented, showing the ability in devising ultra-thin and compact functional terahertz components.
