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Proceedings Paper

Scattering of sub-millimeter radiation from rough surfaces: absorbers and diffuse reflectors for HIFI and PACS
Author(s): Tjeerd O. Klaassen; John H. Blok; J. Niels Hovenier; Gerd Jakob; Dirk Rosenthal; Klaas J. Wildeman
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Paper Abstract

Absorbing coatings for the HIFI and PACS spectrometers aboard the Herschel platform have been developed and optically characterized. Using radiation from an optically pumped far-infrared laser at wavelengths in the 90 - 900 μm range, the specular as well as the diffuse reflection - characterized by the Bi-directional Reflection Distribution Function - have been determined. The influence of polarization has been addressed too. Moreover, the absorption of non-absorbing diffusely reflecting surfaces, to be used for integrating spheres, has been determined using a low temperature calorimetric method.

Paper Details

Date Published: 5 March 2003
PDF: 9 pages
Proc. SPIE 4850, IR Space Telescopes and Instruments, (5 March 2003); doi: 10.1117/12.461566
Show Author Affiliations
Tjeerd O. Klaassen, Technische Univ. Delft (Netherlands)
John H. Blok, Technische Univ. Delft (Netherlands)
J. Niels Hovenier, Technische Univ. Delft (Netherlands)
Gerd Jakob, Max-Planck-Institut fuer extraterrestrische Physik (Germany)
Dirk Rosenthal, Max-Planck-Institut fuer extraterrestrische Physik (Germany)
Klaas J. Wildeman, Space Research Organization Netherlands (Netherlands)

Published in SPIE Proceedings Vol. 4850:
IR Space Telescopes and Instruments
John C. Mather, Editor(s)

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