Strong Coupling between Propagating and Localized Surface Plasmons in Plasmonic Cavities  

作　　者：LI Ming-Zhu AN Zheng-Hua ZHOU Lei MAO Fei-Long WANG Heng-Liang 李明珠;安正华;周磊;毛飞龙;王恒亮(Institute of Advanced Materials and State Key Laboratory of Surface Physics,Fudan University,Shanghai 200433)

机构地区：[1]Institute of Advanced Materials and State Key Laboratory of Surface Physics,Fudan University,Shanghai 200433

出　　处：《Chinese Physics Letters》2011年第7期225-228,共4页中国物理快报（英文版）

基　　金：by the National Basic Research Program of China under Grant No 2009CB929300;the National Natural Science Foundation of China under Grant Nos 60725417,10804019 and 60990321;Shanghai Science and Technology Committee under Grant Nos 08dj1400302 and 09dj1400103;Japan Science and Technology Corporation(JST)Project.

摘　　要：Au/GaAs/Au plasmonic cavities with a periodic hole array perforated in the top Au layer are studied.Propagating surface plasmons(PSPs)and localized surface plasmons(LSPs)associated with the rectangle hole shapes are found to interact and highly hybridize in the cavity structure,which eventually determines the resonance properties of the cavities.An anticrossing of resonance frequencies in the reflection spectra is observed when the frequency of PSPs approaches that of LSPs,demonstrating the strong coupling between SPPs and LSPs in the tri-layer plasmonic cavities.This work may provide hints to the plasmonic cavity design for light-harvesting optoelectronic applications.

关 键 词：PLASMON eventually COUPLING 

分 类 号：O53[理学—等离子体物理]