Scattering of sub-millimeter radiation from rough surfaces: absorbers and diffuse reflectors for HIFI and PACS

Tjeerd O. Klaassen; John H. Blok; J. Niels Hovenier; Gerd Jakob; Dirk Rosenthal; Klaas J. Wildeman

doi:10.1117/12.461566

5 March 2003 Scattering of sub-millimeter radiation from rough surfaces: absorbers and diffuse reflectors for HIFI and PACS

Tjeerd O. Klaassen, John H. Blok, J. Niels Hovenier, Gerd Jakob, Dirk Rosenthal, Klaas J. Wildeman

Author Affiliations +

Proceedings Volume 4850, IR Space Telescopes and Instruments; (2003) https://doi.org/10.1117/12.461566
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

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.

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Tjeerd O. Klaassen, John H. Blok, J. Niels Hovenier, Gerd Jakob, Dirk Rosenthal, and Klaas J. Wildeman "Scattering of sub-millimeter radiation from rough surfaces: absorbers and diffuse reflectors for HIFI and PACS", Proc. SPIE 4850, IR Space Telescopes and Instruments, (5 March 2003); https://doi.org/10.1117/12.461566

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