Bilayer Al wire-grids as broadband and high-performance polarizers

被引：159

作者：

Ekinci, Y ^{[1
]}

Solak, HH ^{[1
]}

David, C ^{[1
]}

Sigg, H ^{[1
]}

机构：

[1] Paul Scherrer Inst, Lab Micro & Nanotechnol, CH-5232 Villigen, Switzerland

来源：

OPTICS EXPRESS | 2006年 / 14卷 / 06期

关键词：

D O I：

10.1364/OE.14.002323

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have fabricated, characterized and theoretically analyzed the performance of bilayer (or stacked) metallic wire-grids. The samples with 100 nm period were fabricated with extreme-ultraviolet interference lithography. Transmission efficiency over 50% and extinction ratios higher than 40 dB were measured in the visible range with these devices. Simulations using a finite-difference time-domain algorithm are in agreement with the experimental results and show that the transmission spectra are governed by Fabry-Perot interference and near-field coupling between the two layers of the structure. The simple fabrication method involves only a single lithographic step without any etching and guarantees precise alignment and separation of the two wire-grids with respect to each other. (c) 2006 Optical Society of America.

引用

页码：2323 / 2334

页数：12

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