Tunable Plasmonic Nanoantennas in Rolled-up Microtubes Coupled to Integrated Quantum Wells

被引：8
|
作者：
Vu, Hoan [1 ,2 ]
Siebels, Jan [1 ]
Sonnenberg, David [2 ]
Mendach, Stefan [2 ]
Kipp, Tobias [1 ]
机构：
[1] Univ Hamburg, Inst Phys Chem, Grindelallee 117, D-20146 Hamburg, Germany
[2] Univ Hamburg, Inst Nanostruct & Solid State Phys, Jungiusstr 11, D-20355 Hamburg, Germany
来源：
ACS PHOTONICS | 2017年 / 4卷 / 11期
关键词：
microtubes; silver cuboids; localized surface plasmons; high-order plasmonic mode; spectral shift; GaAs quantum wells; FLUORESCENCE ENHANCEMENT; EMISSION; DOTS; NANOCRYSTALS; FILMS; GAP;
D O I：
10.1021/acsphotonics.7b00667
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We propose and realize a tunable plasmonic nanoantenna design consisting of two stacked Ag cuboids that are integrated into a rolled-up semiconductor microtube. The antenna's resonance is tuned by varying the cuboid's distance to match the photoluminescence emission of an embedded GaAs quantum well. Spatially, spectrally and temporally resolved photoluminescence measurements reveal a redshift and a reduction in lifetime of the quantum-well emission as signatures for the coupling to the antenna system. By means of finite-element electromagnetic simulations, we assign the coupling to an excitation of a high order plasmonic mode inside the Ag cuboids.
引用
收藏
页码：2659 / 2663
页数：5
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