Guided Bloch Surface Waves on Ultrathin Polymeric Ridges

被引：146

作者：

Descrovi, Emiliano ^{[1
]}

Sfez, Tristan ^{[2
]}

Quaglio, Marzia ^{[3
]}

Brunazzo, Daniele ^{[4
]}

Dominici, Lorenzo ^{[5
,6
]}

Michelotti, Francesco ^{[5
,6
]}

Herzig, Hans Peter ^{[2
]}

Martin, Olivier J. F. ^{[4
]}

Giorgis, Fabrizio ^{[1
]}

机构：

[1] Politecn Torino, Mat & Microsystems Lab Xlab, IT-10129 Turin, Italy

[2] Ecole Polytech Fed Lausanne EPFL STI OPT, Opt & Photon Technol Lab, CH-2000 Neuchatel, Switzerland

[3] IIT Italian Inst Technol POLITO, I-10129 Turin, Italy

[4] Swiss Fed Inst Technol Lausanne EPFL STI NAM, Nanophoton & Metrol Lab, CH-1015 Lausanne, Switzerland

[5] Univ Roma La Sapienza, Dipartimento Energet, IT-00161 Rome, Italy

[6] CNISM, IT-00161 Rome, Italy

来源：

NANO LETTERS | 2010年 / 10卷 / 06期

基金：

瑞士国家科学基金会;

关键词：

Surface electromagnetic waves; near-field optical microscopy; ELECTROMAGNETIC-WAVES; LIGHT; SCATTERING; PLASMONS; MODES;

D O I：

10.1021/nl100481q

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We present a direct evidence of Bloch surface waves (BSWs) waveguiding on ultrathin polymeric ridges, supported by near-field measurements. It is demonstrated that near-infrared BSWs sustained by a silicon-based multilayer can be locally coupled and guided through dielectric ridges of nanometric thickness with low propagation losses. Using a conventional prism-based configuration, we demonstrate a wavelength-selective BSW coupling inside and outside the ridge. Such a result can open interesting opportunities in surface wave-mediated sensing applications, where light could be selectively coupled in specific regions defined by nanometric reliefs.

引用

页码：2087 / 2091

页数：5

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