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Cooled infrared filters and dichroics for the sea and land surface temperature radiometer (SLSTR)

Hawkins, G., Sherwood, R., Djotni, K., Coppo, P. M., Höhnemann, H. and Belli, F. (2013) Cooled infrared filters and dichroics for the sea and land surface temperature radiometer (SLSTR). Applied Optics Journal, 52 (10). pp. 2125-2135. ISSN 2155-3165

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To link to this item DOI: 10.1364/AO.52.002125

Abstract/Summary

The Sea and Land Surface Temperature Radiometer (SLSTR) is a nine channel visible and infrared high precision radiometer designed to provide climate data of global sea and land surface temperatures. The SLSTR payload is destined to fly on the Ocean and Medium-Resolution Land Mission for the ESA/EU Global Monitoring for Environment and Security (GMES) Programme Sentinel-3 mission to measure the sea and land temperature and topography for near real-time environmental and atmospheric climate monitoring of the Earth. In this paper we describe the optical layout of infrared optics in the instrument, spectral thin-film multilayer design, and system channel throughput analysis for the combined interference filter and dichroic beamsplitter coatings to discriminate wavelengths at 3.74, 10.85 & 12.0 μm. The rationale for selection of thin-film materials, deposition technique, and environmental testing, inclusive of humidity, thermal cycling and ionizing radiation testing are also described.

Item Type:Article
Refereed:Yes
Divisions:Science > School of Mathematical, Physical and Computational Sciences > Department of Computer Science
ID Code:31707
Additional Information:This work has been supported under contract by Selex Galileo S.p.A (DA-ACQ/SB-005/09) and AIM Infrarot-Module GmbH (4500048609), whose collaboration and support is gratefully acknowledged. The authors also thank colleagues at Crystran Ltd, Oxford University, Cranfield University in the UK, and TRAD, France for their contributions to the project.
Publisher:Optical Society of America

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