Three-Dimensional Invisibility Cloak at Optical Wavelengths

作者：Tolga Ergin, Nicolas Stenger, Patrice Brenner, J. B. Pendry, Martin Wegener · 发表于：Science · 年份：2010 · DOI：10.1126/science.1186351 · 被引用次数：1243 · 研究领域：Metamaterials and Metasurfaces Applications、Photonic Crystals and Applications、Advanced Materials and Mechanics

We have designed and realized a three-dimensional invisibility-cloaking structure operating at optical wavelengths based on transformation optics. Our blueprint uses a woodpile photonic crystal with a tailored polymer filling fraction to hide a bump in a gold reflector. We fabricated structures and controls by direct laser writing and characterized them by simultaneous high-numerical-aperture, far-field optical microscopy and spectroscopy. A cloaking operation with a large bandwidth of unpolarized light from 1.4 to 2.7 micrometers in wavelength is demonstrated for viewing angles up to 60 degrees.