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Proceedings Paper

Nanostructures versus thin films in the design of antireflection coatings
Author(s): Uwe B. Schallenberg
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Paper Abstract

It is shown how the discussion about antireflection coatings for the visible and near infrared region has been changed dramatically with recent experimental applications of nanostructures that realize media with effective refractive indices less than the 'magic border' of 1.34. Using the so-called binary optics as an example, a glass-like nanostructure similar to the moth-eye structure is theoretically designed as antireflection coating for the visible and near infrared region. With the aim of this example and considering only known design principles of thin-film optics, a connection between nanostructures and thin films regarding their alternative or combined application as antireflection coatings is presented. As summary regarding the nanostructures vs. thin film discussion, a reference list is presented that cited different types of antireflection coatings presented in the past 70 years with respect to their applications, designs, and deposition technologies.

Paper Details

Date Published: 3 October 2011
PDF: 9 pages
Proc. SPIE 8168, Advances in Optical Thin Films IV, 81681N (3 October 2011); doi: 10.1117/12.896841
Show Author Affiliations
Uwe B. Schallenberg, Optics Balzers Jena GmbH (Germany)

Published in SPIE Proceedings Vol. 8168:
Advances in Optical Thin Films IV
Michel Lequime; H. Angus Macleod; Detlev Ristau, Editor(s)

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