Characterisation of optical detectors using high-accuracy instruments

Citation
F. Manoochehri et al., Characterisation of optical detectors using high-accuracy instruments, ANALYT CHIM, 380(2-3), 1999, pp. 327-337
Citations number
36
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
ANALYTICA CHIMICA ACTA
ISSN journal
00032670 → ACNP
Volume
380
Issue
2-3
Year of publication
1999
Pages
327 - 337
Database
ISI
SICI code
0003-2670(19990202)380:2-3<327:COODUH>2.0.ZU;2-8
Abstract
The facilities of the Metrology Research Institute at the Helsinki Universi ty of Technology, and methods for characterisation of optical detectors for spectral radiant intensity and irradiance responsivity, are described. The instrumentation for such characterisations includes a reference spectromet er with a number of auxiliary set-ups, and equipment for the spectral irrad iance measurements with a filter radiometer based on a trap detector. The m ethods of realising the spectral responsivity scales based on an absolute c ryogenic radiometer in house are addressed. The procedures and results of c haracterisation of a multipoint measuring system of photosynthetically acti ve radiation, by employing the available facilities, are briefly described. The absolute irradiance responsivity of the device is determined by using a photometric lamp, whose spectral irradiance has been measured with the fi lter radiometer. The combined standard uncertainty of this set of calibrati ons is 3.6% at the 1 sigma level. The uncertainty is caused almost complete ly by the multipoint measuring system. (C) 1999 Elsevier Science B.V. All r ights reserved.