Polarisation-selective hotspots in metallic ring stack arrays

被引：4

作者：

Brooks, Laura J. ^{[1
]}

Mertens, Jan ^{[1
]}

Bowman, Richard W. ^{[1
]}

Chikkaraddy, Rohit ^{[1
]}

Sanders, Alan ^{[1
]}

Baumberg, Jeremy J. ^{[1
]}

机构：

[1] Univ Cambridge, Cavendish Lab, Dept Phys, NanoPhoton Ctr, JJ Thomson Ave, Cambridge CB3 0HE, England

来源：

OPTICS EXPRESS | 2016年 / 24卷 / 04期

基金：

英国工程与自然科学研究理事会;

关键词：

LARGE-AREA; INTERFERENCE LITHOGRAPHY; NANOSTRUCTURES; METASURFACES; OPTICS; NANO;

D O I：

10.1364/OE.24.003663

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate a simple, scalable fabrication method for producing large-area arrays of vertically stacked metallic micro-rings, embedded in a deformable polymer sheet. Unusual polarisation-dependent hotspots are found to dominate the reflection images. To understand their origin, the arrays are characterized using point-scanning optical spectroscopy and directly compared to numerical simulations. Individual ring stacks act as microlenses, while polarisation-dependent hotspots arise at the connections between neighbouring stacks, which are comprised of parabolically-arranged parallel gold nanowires. The elastomeric properties of the polymer host opens the door to active control of the optics of this photonic material, through dynamic tuning of the nanowire spacings and array geometry. Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License.

引用

页码：3663 / 3671

页数：9

共 34 条

[1] Flexible Plasmonics on Unconventional and Nonplanar Substrates [J].