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  Combined ‘moth-eye’ structured and graded index-layer anti-reflecting coating for high index glasses

Kraus, M., Diao, Z., Weishaupt, K., Spatz, J. P., Täschner, K., Bartzsch, H., et al. (2019). Combined ‘moth-eye’ structured and graded index-layer anti-reflecting coating for high index glasses. Optics Express, 27(24), 34656-34664. doi:10.1364/OE.27.034655.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0005-1F7E-D Version Permalink: http://hdl.handle.net/21.11116/0000-0005-1F7F-C
Genre: Journal Article

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 Creators:
Kraus, Matthias, Author
Diao, Zhaolu1, 2, Author              
Weishaupt, Klaus3, Author              
Spatz, Joachim P.1, 2, Author              
Täschner, Kerstin, Author
Bartzsch, Hagen, Author
Schmittgens, Ralph, Author
Brunner, Robert, Author
Affiliations:
1Cellular Biophysics, Max Planck Institute for Medical Research, Max Planck Society, ou_2364731              
2Biophysical Chemistry, Institute of Physical Chemistry, University of Heidelberg, 69120 Heidelberg, Germany, ou_persistent22              
3Max Planck Institute for Medical Research, Max Planck Society, ou_1125545              

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 Abstract: We present a hybrid antireflective coating (ARC) providing a complete continuous graded refractive index (GRIN) transition from a high-index substrate down to ambient air. The ARC comprises a first GRIN layer of dense silicon-oxy-nitride with a varying, height adjusted material composition. Secondly, a layer of quasi-periodic nanopillars imitating AR-“moth-eye structure” is added to the dense GRIN layer. Demonstrated on a high index glass with a refractive index of ne=1.73 the hybrid GRIN-ARC is applicable to a broad material selection and allows to eliminate any step-like transition up to a refractive index of the substrate of ∼2.0. The ARC offers antireflective properties for large incidence angles and over an extremely broad spectrum ranging from 400 nm up to 2.5 µm. Compared to the sole substrate, the hybrid GRIN-ARC results in an increase of transmittance of more than 10% in the maximum, and more than 6% in the peripheral regions of the spectrum.

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Language(s): eng - English
 Dates: 2019-10-112019-09-092019-10-162019-11-11
 Publication Status: Published in print
 Pages: 10
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 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1364/OE.27.034655
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Title: Optics Express
  Abbreviation : Opt. Express
Source Genre: Journal
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Publ. Info: Washington, DC : Optical Society of America
Pages: - Volume / Issue: 27 (24) Sequence Number: - Start / End Page: 34656 - 34664 Identifier: ISSN: 1094-4087
CoNE: https://pure.mpg.de/cone/journals/resource/954925609918