Electric tuning of plasmonic resonances in ultrathin gold nanoribbon arrays  

作　　者：ZHENXIN WANG ALEXEY VKRASAVIN CHENXINYU PAN JUNSHENG ZHENG ZHIYONG LI XIN GUO ANATOLY VZAYATS LIMIN TONG PAN WANG 

机构地区：[1]State Key Laboratory of Extreme Photonics and Instrumentation,College of Optical Science and Engineering,Zhejiang University,Hangzhou 310027,China [2]Department of Physics and London Centre for Nanotechnology,King’s College London,Strand,London WC2R 2LS,UK [3]Jiaxing Key Laboratory of Photonic Sensing&Intelligent Imaging,Intelligent Optics&Photonics Research Center,Jiaxing Research Institute Zhejiang University,Jiaxing 314000,China

出　　处：《Photonics Research》2024年第8期1750-1759,共10页光子学研究（英文版）

基　　金：National Natural Science Foundation of China(62075195,92250305);National Key Research and Development Program of China(2023YFB2806700);The UK EPSRC CPLAS project(EP/W017075/1);Natural Science Foundation of Zhejiang Province(LDT23F04015F05);Fundamental Research Funds for the Central Universities(2023QZJH13)。

摘　　要：Ultrathin plasmonic nanostructures offer an unparalleled opportunity for the study of light–matter interactions at the nanoscale and realization of compact nanophotonic devices.In this study,we introduce an ultrathin gold nanoribbon array and demonstrate an electric approach to actively tuning its plasmonic resonance,which leveraging the extreme light confinement capability in the ultrathin plasmonic nanostructure and a robust nanoscale electro-optical effect in indium tin oxide.Optimizing the design(to a total thickness as small as 12 nm for a 2-nmthick gold nanoribbon array),we numerically demonstrate a spectral shift in the plasmonic resonance up to 36 nm along with an approximately 16%change in the transmission at a gate voltage below 1.7 V at the wavelength of1.47μm.This work presents progress towards electric tuning of plasmonic resonances in ultrathin metallic nanostructures for various applications including surface-enhanced spectroscopy,spontaneous emission enhancement,and optical modulation.

关 键 词：PLASMON tuning REALIZATION 

分 类 号：O53[理学—等离子体物理]