Planar Lenses Based on Nanoscale Slit Arrays in a Metallic Film

被引：442

作者：

Verslegers, Lieven ^{[1
]}

Catrysse, Peter B. ^{[1
]}

Yu, Zongfu ^{[1
]}

White, Justin S. ^{[2
]}

Barnard, Edward S. ^{[2
]}

Brongersma, Mark L. ^{[2
]}

Fan, Shanhui ^{[1
]}

机构：

[1] Stanford Univ, Edward L Ginzton Lab, Stanford, CA 94305 USA

[2] Stanford Univ, GLAM, Stanford, CA 94305 USA

来源：

NANO LETTERS | 2009年 / 9卷 / 01期

关键词：

METAMATERIALS; LIGHT;

D O I：

10.1021/nl802830y

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We experimentally demonstrate planar lenses based on nanoscale slit arrays in a metallic film. Our lens structures consist of optically thick gold films with micron-size arrays of closely spaced, nanoscale slits of varying widths milled using a focused ion beam. We find excellent agreement between electromagnetic simulations of the design and confocal measurements on manufactured structures. We provide guidelines for lens design and show how actual lens behavior deviates from simple theory.

引用

页码：235 / 238

页数：4

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