All-dielectric phase-change reconfigurable metasurface
Mesoscale and Nanoscale Physics
2016-08-04 v2 Optics
Abstract
We harness non-volatile, amorphous-crystalline transitions in the chalcogenide phase-change medium germanium antimony telluride (GST) to realize optically-switchable, all-dielectric metamaterials. Nanostructured, subwavelength-thickness films of GST present high-quality resonances that are spectrally shifted by laser-induced structural transitions, providing reflectivity and transmission switching contrast ratios of up to 5:1 (7 dB) at visible/near-infrared wavelengths selected by design.
Cite
@article{arxiv.1604.01330,
title = {All-dielectric phase-change reconfigurable metasurface},
author = {Artemios Karvounis and Behrad Gholipour and Kevin F. MacDonald and Nikolay I. Zheludev},
journal= {arXiv preprint arXiv:1604.01330},
year = {2016}
}
Comments
8 pages, 8 figures