High‐Q Metallic Fano Metamaterial for Highly Efficient Cerenkov Lasing,Advanced Optical Materials

当前位置： X-MOL 学术 › Adv. Opt. Mater. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

High‐Q Metallic Fano Metamaterial for Highly Efficient Cerenkov Lasing
Advanced Optical Materials ( IF 8.0 ) Pub Date : 2018-04-03 , DOI: 10.1002/adom.201800041
Seontae Kim ₁ , In-Keun Baek ₁ , Ranajoy Bhattacharya ₂ , Dongpyo Hong ₁ , Matlabjon Sattorov ₃ , Anirban Bera ₄ , Jin-Kyu So ₅ , Dai-Sik Kim ₆ , Gun-Sik Park _{1,

3}

Affiliation

A high‐quality‐factor (high‐Q) metallic Fano metamaterial is demonstrated both experimentally and theoretically. This material is suitable for highly efficient Cerenkov lasing in which subwavelength metallic slits are arranged to form asymmetric unit cells. In contrast to conventional dielectric Cerenkov or Smith–Purcell devices, in the proposed device, convection electrons traverse the high‐Q metallic metamaterial. The interplay between an extremely low group velocity from the infinite transverse permittivity of the anisotropic metamaterial and the subradiant damping from a Fano‐type slit mode is shown to be responsible for the high‐Q value, which is measured to be unprecedented at 700. The resulting improvement in the Cerenkov lasing efficiency is estimated to be more than two orders of magnitude using a particle‐in‐cell simulation.

中文翻译：

高Q金属Fano超材料可实现高效Cerenkov激光发射

通过实验和理论证明了高质量因子（高Q）金属Fano超材料。这种材料适用于高效Cerenkov激光，其中亚波长金属狭缝排列成不对称的晶胞。与传统的介电Cerenkov或Smith-Purcell器件相反，在提出的器件中，对流电子横穿高Q金属超材料。各向异性超材料的无限横向介电常数引起的极低群速度与Fano型狭缝模式的亚辐射阻尼之间的相互作用被证明是造成高Q值的原因，该高Q值在700时被史无前例地测得。使用单元格内粒子模拟，由此得出的Cerenkov激光效率提高幅度超过了两个数量级。

更新日期：2018-04-03

点击分享查看原文

点击收藏

公开下载

阅读更多本刊最新论文本刊介绍/投稿指南11