Nonlinear Physics Center, Research School of Physics and Engineering, Australian National University, Canberra ACT 2601, Australia.
Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA.
Nanoscale. 2017 Feb 9;9(6):2201-2206. doi: 10.1039/c6nr09702b.
Recent progress in the study of resonant light confinement in high-index dielectric nanostructures suggests a new route for achieving efficient control of both electric and magnetic components of light. It also leads to the enhancement of nonlinear effects near electric and magnetic Mie resonances with an engineered radiation directionality. Here we study the third-harmonic generation from dimers composed of pairs of two identical silicon nanoparticles and demonstrate, both numerically and experimentally, that the multipolar harmonic modes generated by the dimers near the Mie resonances allow the shaping of the directionality of nonlinear radiation.
近期在高折射率介质纳米结构中的共振光限制方面的研究进展表明，实现对光的电分量和磁分量的有效控制有了新途径。这也导致了在电和磁米氏共振附近的非线性效应的增强，同时具有工程化的辐射方向性。在这里，我们研究了由两对相同的硅纳米粒子组成的二聚体的三次谐波产生，并通过数值和实验证明，二聚体在米氏共振附近产生的多极谐波模式允许对非线性辐射的方向性进行塑形。
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