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Cooled infrared filters and dichroics for the James Webb Space Telescope Mid-Infrared Instrument

Hawkins, G. and Sherwood, R. E. (2008) Cooled infrared filters and dichroics for the James Webb Space Telescope Mid-Infrared Instrument. Applied Optics, 47 (13). C25-C34. ISSN 0003-6935

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To link to this article DOI: 10.1364/AO.47.000C25

Abstract/Summary

The cooled infrared filters and dichroic beam splitters manufactured for the Mid-Infrared Instrument are key optical components for the selection and isolation of wavelengths in the study of astrophysical properties of stars, galaxies, and other planetary objects. We describe the spectral design and manufacture of the precision cooled filter coatings for the spectrometer (7 K) and imager (9 K). Details of the design methods used to achieve the spectral requirements, selection of thin film materials, deposition technique, and testing are presented together with the optical layout of the instrument. (C) 2008 Optical Society of America.

Item Type:Article
Refereed:Yes
Divisions:Faculty of Science > School of Systems Engineering
ID Code:15261
Uncontrolled Keywords:REFRACTIVE-INDEXES, CADMIUM TELLURIDE, TEMPERATURE, COEFFICIENTS, DESIGN, FILMS
Publisher:Optical Society of America

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