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Proceedings Paper • Open Access

Design and manufacture of high absorption metal dielectric coatings for the reduction of straylight
Author(s): Michel Cathelinaud; Frédéric Lemarquis; Philippe Torchio; Claude Amra

Paper Abstract

This paper describes the design and manufacture of broadband metal dielectric absorbers. First, we give some design principles to obtain achromatic absorption properties. Then, we describe a new method to determine the complex refractive index of metallic layers. A graded index model is developed to take account of the evolution of the film packing density. Manufacturing is detailed in the last section. Absorption levels higher than 99.9% have been measured over the visible range.

Paper Details

Date Published: 21 November 2017
PDF: 11 pages
Proc. SPIE 10569, International Conference on Space Optics — ICSO 2000, 105690C (21 November 2017); doi: 10.1117/12.2307944
Show Author Affiliations
Michel Cathelinaud, Institut Fresnel (France)
Frédéric Lemarquis, Institut Fresnel (France)
Philippe Torchio, Institut Fresnel (France)
Claude Amra, Institut Fresnel (France)

Published in SPIE Proceedings Vol. 10569:
International Conference on Space Optics — ICSO 2000
Georges Otrio, Editor(s)

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