Extremely narrow resonant linewidths in metal-dielectric heterostructures  

作　　者：JIE ZHENG JINFENG ZHU ZHILIN YANG 

机构地区：[1]Department of Physics,Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices,Jiujiang Research Institute,Xiamen University,Xiamen 361005,China [2]Laboratory of Micro-Nano Optics,School of Physics and Electronic Engineering,Sichuan Normal University,Chengdu 610101,China [3]Department of Electronic Science,Xiamen University,Xiamen 361005,China

出　　处：《Photonics Research》2022年第7期1754-1762,共9页光子学研究（英文版）

基　　金：National Natural Science Foundation of China(12104329,12174324,92161118);Ministry of Science and Technology of the People's Republic of China(2021YFA1201502)。

摘　　要：Plasmonic high-quality factor resonators with narrow surface plasmon resonance(SPR)linewidths are extremely significant for surface-enhanced Raman scattering,optical sensors,imaging,and color filters.Unfortunately,extensive research on narrowing SPR linewidths is mainly based on noble metal nanostructures that are restricted by intrinsic loss.Here,heterostructures consisting of metal and dielectric metaphotonics are experimentally designed and fabricated for elaborating SPR linewidths.The results demonstrate that the SPR linewidths can be narrowed by 66.7%relative to that of aluminum nanostructures.The resonant linewidths are directly shrunk due to the interaction between low loss in the semiconductor nanostructures and electromagnetic confinement in the metal counterparts.Meanwhile,the resonant wavelength governed by heterostructure configurations shifts from600 to 930 nm.This work will pave an avenue toward controlling resonant linewidths of metaldielectric heterostructures for numerous applications.

关 键 词：NARROW RESONANT DIELECTRIC 

分 类 号：TB383.1[一般工业技术—材料科学与工程]