Share Email Print

Proceedings Paper

Correction and curing of in-orbit-induced nonideal behavior of ISOPHOTS's photodetectors
Author(s): Josef Schubert; Gabriele Roth; Juergen Wolf; Dietrich Lemke; Boris I. Fouks
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

ISOPHOT, the photo-polarimeter on the Infrared Space Observatory (ISO) uses high sensitivity doped silicon and germanium photodetectors working in the wavelength range form 2.4 to 240 micrometers . Under low IR-background conditions such detectors show long and non-linear response relaxation to a step change of IR-illumination. We will show that this nonideal behavior can be described with high precision at least for the PHT-S Si:Ga detectors. In space, high- energy radiation will strongly influence the performance of the detectors operated a low temperature. Irradiation tests using a (gamma) -radiation source were performed on our Ge:Ga and stressed Ge:Ga detector simulating the radiation environment on the ISO orbit. We found annealing procedures for the detectors which restore the photometric calibrations to within a few percent.

Paper Details

Date Published: 14 September 1994
PDF: 12 pages
Proc. SPIE 2268, Infrared Spaceborne Remote Sensing II, (14 September 1994); doi: 10.1117/12.185839
Show Author Affiliations
Josef Schubert, Max-Planck-Institut fuer Astronomie (Germany)
Gabriele Roth, Max-Planck-Institut fuer Astronomie (Germany)
Juergen Wolf, Max-Planck-Institut fuer Astronomie (Germany)
Dietrich Lemke, Max-Planck-Institut fuer Astronomie (Germany)
Boris I. Fouks, Institute of Radio Engineering and Electronics (Russia)

Published in SPIE Proceedings Vol. 2268:
Infrared Spaceborne Remote Sensing II
Marija S. Scholl, Editor(s)

© SPIE. Terms of Use
Back to Top