Dispersion management of anisotropic metamirror for super-octave bandwidth polarization conversion.
作者： Yinghui Guo , Yanqin Wang , Mingbo Pu , Zeyu Zhao , Xiaoyu Wu
DOI: 10.1038/SREP08434
关键词: Resonance 、 Polarization (waves) 、 Dispersion (optics) 、 Metamaterial 、 Bandwidth (signal processing) 、 Refraction 、 Multispectral image 、 Polarizer 、 Electronic engineering 、 Computer science 、 Achromatic lens 、 Anisotropy
摘要: Dispersion engineering of metamaterials is critical yet not fully released in applications where broadband and multispectral responses are desirable. Here we propose a strategy to circumvent the bandwidth limitation by implementing two-dimensional dispersion meta-atoms. Lorentzian resonances exploited as building blocks both dimensions dedicatedly designed meta-atoms construct expected dispersion. We validated this designing fabricating an anisotropic metamirror, which can accomplish achromatic polarization transformation 4-octave (two times previous converters). This work only paves way for design but also inspire potential management nano-photonics.
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