Fernández-Domínguez A I, Moreno Esteban, Martín-Moreno L, García-Vidal F J
Departamento de Física Teórica de la Materia Condensada, Universidad Autónoma de Madrid, Madrid, Spain.
Opt Lett. 2009 Jul 1;34(13):2063-5. doi: 10.1364/ol.34.002063.
We propose a metamaterial approach to route terahertz waves that features subwavelength confinement in the transverse plane. The guiding mechanism is based on geometrically induced electromagnetic modes sustained by corrugated metallic wedges, whose characteristics resemble those of wedge plasmon polaritons at telecom and optical frequencies. Additionally, frequency selective focusing and slowing down of terahertz radiation based on the proposed wedge waveguides are presented.
我们提出了一种超材料方法来引导太赫兹波，该方法在横向平面上具有亚波长限制特性。其引导机制基于由波纹金属楔维持的几何诱导电磁模式，这些模式的特性类似于电信和光频下的楔形表面等离激元极化激元。此外，还介绍了基于所提出的楔形波导的太赫兹辐射的频率选择性聚焦和减速。
