Far-Field Super-Resolution Imaging of Nano-transparent Objects by Hyperlens with Plasmonic Resonant Cavity
Far-Field Super-Resolution Imaging of Nano-transparent Objects by Hyperlens with Plasmonic Resonant Cavity
复制标题
等离激元谐振腔超透镜对纳米透明物体进行远场超分辨率成像
DOI:
10.1007/s11468-015-0081-5
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发表时间:
2016-04
期刊:
影响因子:
3
通讯作者:
Luo, Xiangang
中科院分区:
文献类型:
--
作者:
Zhang, Wei;Yan, Wei;Wang, Changtao;Luo, Xiangang
A plasmonic resonant cavity-based hyperlens is theoretically proposed and demonstrated to achieve far-field phase contrast images of nano-transparent objects. The phase contrast super-resolution imaging is mainly contributed to the excited surface plasmons inside hyperlens and cavity structure surrounding nano-objects, which help to greatly enhance evanescent waves generated by nano-transparent objects and convert weak phase information to light intensity distribution with high contrast at the zoomed imaging plane of hyperlens. As examples, nano-dielectric object imaging is numerically demonstrated with half-pitch resolution about λ/10 and a minimum distinguishable refractive index difference down to 0.15.
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