Near-Field Imaging of Phased Array Metasurfaces

被引：59

作者：

Bohn, Bernhard J. ^{[1
,2
]}

Schnell, Martin ^{[3
]}

Kats, Mikhail A. ^{[1
,4
]}

Aieta, Francesco ^{[1
]}

Hillenbrand, Rainer ^{[3
,5
,6
]}

Capasso, Federico ^{[1
]}

机构：

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

[2] Univ Munich, Fak Phys, D-80799 Munich, Germany

[3] CIC NanoGUNE, San Sebastian 20018, Basque Country, Spain

[4] Univ Wisconsin, Dept Elect & Comp Engn, Madison, WI 53706 USA

[5] EHU UPV, San Sebastian 20018, Basque Country, Spain

[6] Basque Fdn Sci, IKERBASQUE, Bilbao 48011, Basque Country, Spain

来源：

NANO LETTERS | 2015年 / 15卷 / 06期

基金：

欧洲研究理事会;

关键词：

Optical antennas; metasurfaces; SNOM; near field; plasmonics; PLASMONIC METASURFACES; ANTENNA MODES; BROAD-BAND; LIGHT; MICROSCOPY; REFRACTION; DISCONTINUITIES; NANOANTENNAS; REFLECTION; RESONANCES;

D O I：

10.1021/acs.nanolett.5b00692

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Phased-antenna metasurfaces can impart abrupt, spatially dependent changes to the amplitude, phase, and polarization of light and thus mold wavefronts in a desired fashion. Here we present an experimental and computational near-field study of metasurfaces based on near-resonant V-shaped antennas and connect their near- and far-field optical responses. We show that far fields can be obtained from limited, experimentally obtained knowledge of the near fields, paving the way for experimental near-field characterization of metasurfaces and other optical nanostructures and prediction of their far fields from the near-field measurements.

引用

页码：3851 / 3858

页数：8

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