Light confinement in low-index particles with all-dielectric anisotropic metamaterial shell (Conference Presentation)
Light confinement in low-index particles with all-dielectric anisotropic metamaterial shell (Conference Presentation)
复制标题
使用全介电各向异性超材料壳对低折射率粒子进行光限制（会议演示）
DOI：
10.1117/12.2545314
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Marandi, Alireza
中科院分区：
文献类型：
--
作者：
Jahani, Saman;Bahng, Joong Hwan;Montjoy, Douglas;Yao, Timothy A.;Kotov, Nicholas A.;Marandi, Alireza
我们提出并证明了具有全介电超材料外壳的低折射率粒子，可以形成高强度的光子纳米射流。我们证明了由于壳的各向异性而产生的额外自由度可以在不增加粒子尺寸的情况下增加超材料壳内的光子射流强度。壳体的各向异性还可以控制mie型多极共振的光谱和空间位置，以达到期望的散射效果。在实验中，超材料外壳由强非线性材料组成，从而增强了纳米尺度下的非线性波长转换。
We propose and demonstrate low-refractive-index particles with all-dielectric metamaterial shell which lead to formation of high intensity photonic nanojets. We show that the extra degree of freedom because of the anisotropy of the shell gives rise to an increase in the photonic jet intensity inside the metamaterial shell without a need to increase the size of the particle. The anisotropy of the shell can also control the spectral and spatial location of the Mie-type multipolar resonances to achieve the desired scattering. In experiments, the metamaterial shell is composed of strong nonlinear materials leading to enhanced nonlinear wavelength conversion at nanoscale.