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Advanced Optical Technologies

Editor-in-Chief: Pfeffer, Michael


CiteScore 2018: 1.42

SCImago Journal Rank (SJR) 2018: 0.499
Source Normalized Impact per Paper (SNIP) 2018: 1.346

In co-publication with THOSS Media GmbH

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2192-8576
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Volume 4, Issue 1

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Polarizing and angle-sensitive color filter in transmittance for security feature applications

Hans Lochbihler
Published Online: 2015-01-15 | DOI: https://doi.org/10.1515/aot-2014-0056

Abstract

Subwavelength gratings comprising a stack of two thin metallic wire gratings embedded in a dielectric exhibit distinctive color properties in transmittance. Its angle-dependent coloring can be easily noticed by human observers in ambient light. Moreover, it has pronounced polarizing properties in the visible wavelength range. The optical properties of these gratings have been numerically studied. The results have been confirmed by manufactured samples replicated by a simple nanoimprint process on plastic foils. The manufacturing process is predestined for industrial mass production. Applications as authentication devices are given.

Keywords: authentication devices; coloring; subwavelength gratings

References

About the article

Corresponding author: Hans Lochbihler, Louisenthal GmbH, P.O. Box 1185, D-83701 Gmund, Germany, e-mail:


Received: 2014-11-04

Accepted: 2014-12-11

Published Online: 2015-01-15

Published in Print: 2015-02-01


Citation Information: Advanced Optical Technologies, Volume 4, Issue 1, Pages 71–77, ISSN (Online) 2192-8584, ISSN (Print) 2192-8576, DOI: https://doi.org/10.1515/aot-2014-0056.

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