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Proceedings Paper • Open Access

Antireflection and absorbing coatings for TROPOMI SWIR immersed grating
Author(s): Hélène Krol; Grégory Chauveau; Didier Torricini; Catherine Grèzes-Besset; Aaldert van Amerongen

Paper Abstract

CILAS is involved in a scientific project for SRON Netherlands Institute for Space Research, on the development of multilayer coatings for the silicon immersed grating prism, which is a key component of the short-wave-infrared (SWIR) channel of the TROPOMI imaging spectrometer.

For the project, two specific coatings have been implemented and qualified by CILAS: first, an antireflection coating deposited on the entrance and exit facets of the immersed grating prism, which reaches a very low value of reflectivity in the infrared [2305nm; 2385nm] spectral range and for a wide angular range [0° to 47°] of incidence of the transmitted light, and second, a metal-dielectric absorbing coating for the third facet of the prism to eliminate parasitic light inside the silicon prism.

Paper Details

Date Published: 20 November 2017
PDF: 5 pages
Proc. SPIE 10564, International Conference on Space Optics — ICSO 2012, 1056438 (20 November 2017); doi: 10.1117/12.2309073
Show Author Affiliations
Hélène Krol, CILAS (France)
Grégory Chauveau, CILAS (France)
Didier Torricini, CILAS (France)
Catherine Grèzes-Besset, CILAS (France)
Aaldert van Amerongen, SRON Netherlands Institute for Space Research (Netherlands)

Published in SPIE Proceedings Vol. 10564:
International Conference on Space Optics — ICSO 2012
Bruno Cugny; Errico Armandillo; Nikos Karafolas, Editor(s)

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