Shi Lei, Meseguer Francisco
COBRA Research Institute, Technische Universiteit Eindhoven 5600 MB Eindhoven, The Netherlands.
Opt Express. 2012 Sep 24;20(20):22616-26. doi: 10.1364/OE.20.022616.
The magnetic field component of light in dielectric materials generally plays a negligible role at optical frequency values. However, it is a key component of metal based metamaterials. Here we report on the dominant role of the magnetic interaction in a dielectric spherical silicon nanocavity coupled to a silicon waveguide. The analytical method, as well as the finite difference time domain (FDTD) simulation, show a three dimensional (3D) magnetic trap effect when the magnetic like Mie resonances of the nanocavity are excited.
在介电材料中，光的磁场分量在光频值下通常起着可忽略不计的作用。然而，它是基于金属的超材料的关键组成部分。在此，我们报道了磁相互作用在与硅波导耦合的介电球形硅纳米腔中的主导作用。分析方法以及时域有限差分（FDTD）模拟表明，当纳米腔的类磁米氏共振被激发时，会产生三维（3D）磁阱效应。
