Accessibility navigation

Infrared optical coatings for the EarthCARE Multispectral Imager


Downloads per month over past year

Hawkins, G., Woods, D., Sherwood, R. and Djotni, K. (2014) Infrared optical coatings for the EarthCARE Multispectral Imager. Applied Optics, 53 (30). pp. 6983-6992. ISSN 0003-6935

Text (Open Access) - Published Version
· Available under License Creative Commons Attribution.
· Please see our End User Agreement before downloading.


To link to this item DOI: 10.1364/AO.53.006983


The Earth Cloud, Aerosol and Radiation Explorer mission (EarthCARE) Multispectral Imager (MSI) is a radiometric instrument designed to provide the imaging of the atmospheric cloud cover and the cloud top surface temperature from a sun-synchronous low Earth orbit. The MSI forms part of a suite of four instruments destined to support the European Space Agency Living Planet mission on-board the EarthCARE satellite payload to be launched in 2016, whose synergy will be used to construct three-dimensional scenes, textures and temperatures of atmospheric clouds and aerosols. The MSI instrument contains seven channels: four solar channels to measure visible and short-wave infrared wavelengths, and three channels to measure infrared thermal emission. In this paper, we describe the optical layout of the infrared instrument channels, thin-film multilayer designs, the coating deposition method and the spectral system throughput for the bandpass interference filters, dichroic beam splitters, lenses and mirror coatings to discriminate wavelengths at 8.8, 10.8, & 12.0 µm. The rationale for the selection of thin-film materials, spectral measurement technique, and environmental testing performance are also presented.

Item Type:Article
Divisions:Faculty of Science > School of Mathematical, Physical and Computational Sciences > Department of Computer Science
ID Code:38433
Uncontrolled Keywords:Space instrumentation, Infrared, Filters, Thin films, Interference Filters, Spectral properties
Publisher:Optical Society of America

University Staff: Request a correction | Centaur Editors: Update this record

Page navigation