Multi-wavelength mid-infrared plasmonic antennas with single nanoscale focal point

被引：27

作者：

Blanchard, Romain ^{[1
]}

Boriskina, Svetlana V. ^{[2
,3
]}

Genevet, Patrice ^{[1
,4
,5
]}

Kats, Mikhail A. ^{[1
]}

Tetienne, Jean-Philippe ^{[1
]}

Yu, Nanfang ^{[1
]}

Scully, Marlan O. ^{[4
,5
]}

Dal Negro, Luca ^{[6
,7
]}

Capasso, Federico ^{[1
]}

机构：

[1] Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA

[2] Boston Univ, Dept Chem, Boston, MA 02215 USA

[3] Boston Univ, Photon Ctr, Boston, MA 02215 USA

[4] Texas A&M Univ, Inst Quantum Studies, College Stn, TX 77843 USA

[5] Texas A&M Univ, Dept Phys, College Stn, TX 77843 USA

[6] Boston Univ, Dept Elect & Comp Engn, Photon Ctr, Boston, MA 02215 USA

[7] Boston Univ, Div Mat Sci & Engn, Boston, MA 02215 USA

来源：

OPTICS EXPRESS | 2011年 / 19卷 / 22期

基金：

美国国家科学基金会;

关键词：

NANOPARTICLE ARRAY STRUCTURES; SCATTERING; RESONANCES; MICROSCOPY; CONTRAST; PARTICLE; LIGHT;

D O I：

10.1364/OE.19.022113

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We propose and demonstrate a novel photonic-plasmonic antenna capable of confining electromagnetic radiation at several mid-infrared wavelengths to a single sub-wavelength spot. The structure relies on the coupling between the localized surface plasmon resonance of a bow-tie nanoantenna with the photonic modes of surrounding multi-periodic particle arrays. Far-field measurements of the transmission through the central bow-tie demonstrate the presence of Fano-like interference effects resulting from the interaction of the bow-tie antenna with the surrounding nanoparticle arrays. The near-field of the multi-wavelength antenna is imaged using an aperture-less near-field scanning optical microscope. This antenna is relevant for the development of near-field probes for nanoimaging, spectroscopy and biosensing. (C) 2011 Optical Society of America

引用

页码：22113 / 22124

页数：12

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