Enhancement of local electromagnetic fields by periodic optical resonators

被引：4

作者：

Sarychev, A. K. ^{[1
]}

Ivanov, A. V. ^{[1
]}

Afanasyev, K. N. ^{[1
]}

Bykov, I. V. ^{[1
]}

Boginskaya, I. A. ^{[1
]}

Kurochkin, I. N. ^{[2
,3
]}

Lagarkov, A. N. ^{[1
]}

Merzlikin, A. M. ^{[1
]}

Mikheev, V. V. ^{[4
]}

Negrov, D. V. ^{[4
]}

Ryzhikov, I. A. ^{[1
]}

Sedova, M. V. ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Theoret & Appl Electrodynam, Ul Izhorskaya 13, Moscow 125412, Russia

[2] Russian Acad Sci, NM Emanuel Inst Biochem Phys, Ul Kosygina 4, Moscow 119334, Russia

[3] Moscow MV Lomonosov State Univ, Dept Chem, Moscow 119991, Russia

[4] Moscow Inst Phys & Technol, Inst Skii Per 9, Dolgoprudnyi 141701, Moscow Region, Russia

来源：

QUANTUM ELECTRONICS | 2018年 / 48卷 / 12期

基金：

俄罗斯基础研究基金会;

关键词：

metasurface; plasmon resonance; dielectric resonators; silicon; nanostructures; giant Raman scattering of light; RAMAN-SCATTERING; SURFACE; SILICON; SERS; LOCALIZATION; MECHANISM; ARRAYS;

D O I：

10.1070/QEL16843

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The periodically profiled metasurfaces of silicon and of the same surfaces coated with a thin layer of silver are experimentally investigated to improve the signal-to-noise ratio in the observation of Raman light scattering from molecular compounds. The noise in this case is the unavoidable background molecular luminescence. Our experimental and computer simulation data demonstrate an anomalous optical response due to the excitation of metal-dielectric surface resonances. An enhanced Raman scattering signal is observed from 5,5'-dithiobis(2-nitrobenzoic) acid (DTNB) organic molecules deposited on the metasurface. The proposed metasurface provides a significant enhancement of the RS signal in comparison with the luminescence signal and is an efficient substrate for realising giant Raman scattering of light.

引用

页码：1147 / 1152

页数：6

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