Three-dimensional polarization-independent visible-frequency carpet invisibility cloak

被引：86

作者：

Fischer, Joachim ^{[1
,2
]}

Ergin, Tolga ^{[1
,2
]}

Wegener, Martin ^{[1
,2
,3
]}

机构：

[1] KIT, Inst Angew Phys, D-76131 Karlsruhe, Germany

[2] KIT, DFG Ctr Funct Nanostruct CFN, D-76131 Karlsruhe, Germany

[3] KIT, Inst Nanotechnol, D-76021 Karlsruhe, Germany

来源：

OPTICS LETTERS | 2011年 / 36卷 / 11期

关键词：

TRANSFORMATION OPTICS; MICROSCOPY;

D O I：

10.1364/OL.36.002059

中图分类号：

O43 [光学];

学科分类号：

070207 [光学];

摘要：

We miniaturize all features in a previously introduced polarization-independent three-dimensional carpet invisibility cloak by more than a factor of 2. This leads to operation wavelengths in the visible. The structures are characterized by electron and optical microscopy. In contrast to our previous work at IR wavelengths, we can directly measure two-dimensional images at visible frequencies, perform control experiments from the backside, and compare the images with theory. We find excellent agreement. Furthermore, we study the wavelength dependence in the range from 900nm down to 500nm. Cloaking action deteriorates as the woodpile stop band at around 575nm is approached. (C) 2011 Optical Society of America

引用

页码：2059 / 2061

页数：3

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