Enhancing optical gradient forces with metamaterials.
Enhancing optical gradient forces with metamaterials.
复制标题
DOI：
10.1103/physrevlett.110.057401
复制
发表时间：
2013-01
影响因子：
8.6
通讯作者：
V. Ginis;P. Tassin;C. Soukoulis;I. Veretennicoff
中科院分区：
文献类型：
--
作者：
V. Ginis;P. Tassin;C. Soukoulis;I. Veretennicoff
我们演示了如何使用转换光学增强两个波导之间的光学梯度力。一层薄的双负或单负超材料可以缩小光所感知的波导间距离，从而使光学力增强十倍以上。这个过程对于通常在超材料中观察到的耗散损耗非常鲁棒。我们的研究结果提供了一种替代方法来提高纳米光子致动系统中的光学梯度力，并可以与现有的基于谐振器的增强方法相结合，以产生具有前所未有的幅度的光学力。
We demonstrate how the optical gradient force between two waveguides can be enhanced using transformation optics. A thin layer of double-negative or single-negative metamaterial can shrink the interwaveguide distance perceived by light, resulting in a more than tenfold enhancement of the optical force. This process is remarkably robust to the dissipative loss normally observed in metamaterials. Our results provide an alternative way to boost optical gradient forces in nanophotonic actuation systems and may be combined with existing resonator-based enhancement methods to produce optical forces with an unprecedented amplitude.