论文标题
使用嵌套不可见的跨表面腔的光线定位
Tunable Localization of Light Using Nested Invisible Metasurface Cavities
论文作者
论文摘要
一个无形的腔是一种开放的谐振设备，它限制了局部场，而无需在设备体积之外产生任何散射。通过利用这种设备的无散射特性，可以筑巢两个看不见的腔，因为无论其相对位置如何，外部空腔都不会注意到内部腔的存在。结果，内部腔的位置成为一种轻松控制腔体内部局部及其质量因子的磁场的手段。在本文中，我们讨论了嵌套无形腔的特性，这是一种实现更强局部磁场和高可调质量因子的简单方法。此外，我们表明，在光学元件中，这些空腔可以使用基于纳米克的介电元面积来实现，这些介电元面在其电气共振附近运行。
An invisible cavity is an open resonant device that confines a localized field without producing any scattering outside of the device volume. By exploiting the scatter-less property of such device, it is possible to nest two invisible cavities, as the outer cavity would simply not notice the presence of the inner one, regardless of their relative position. As a result, the position of the inner cavity becomes a means to easily control the field localized inside the cavity and its quality factor. In this paper, we discuss the properties of nested invisible cavities as a simple method to achieve stronger localized fields and high tunable quality factor. Furthermore, we show that in optics, these cavities can be implemented using nanodisk-based dielectric metasurfaces that operate near their electric resonances.
