Establishing a high-accuracy spectral response scale in the near infrared with digital filters

Spectrally invariant detectors are commonly used to interpolate or extrapolate the responsivity of InGaAs detectors in the infrared from absolute calibrations at a few wavelengths. The random noise in such detectors limits the accuracy that can be achieved in a narrowband, double-monochromator setup...

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Veröffentlicht in:	Applied Optics 2005-05, Vol.44 (13), p.2482-2489
Hauptverfasser:	Gran, Jarle, Ellingsberg, Kristian, Sudbø, Aasmund S
Format:	Artikel
Sprache:	eng
Schlagworte:	ACCURACY CALIBRATION CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS DIGITAL FILTERS NOISE PHOTODETECTORS RANDOMNESS SPECTRAL RESPONSE WAVELENGTHS
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container_title	Applied Optics
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creator	Gran, Jarle Ellingsberg, Kristian Sudbø, Aasmund S
description	Spectrally invariant detectors are commonly used to interpolate or extrapolate the responsivity of InGaAs detectors in the infrared from absolute calibrations at a few wavelengths. The random noise in such detectors limits the accuracy that can be achieved in a narrowband, double-monochromator setup. We propose the application of a dedicated digital filter, which reduces the uncertainty by 30%, and combine it by calibrating a group of three detectors. The uncertainties are propagated from the observed variance in the relative measurement to the combined uncertainty of 0.4% (2sigma) in the responsivity values of the InGaAs detectors in the range of 1010-1640 nm.
doi_str_mv	10.1364/AO.44.002482
format	Article
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subjects	ACCURACY CALIBRATION CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS DIGITAL FILTERS NOISE PHOTODETECTORS RANDOMNESS SPECTRAL RESPONSE WAVELENGTHS
title	Establishing a high-accuracy spectral response scale in the near infrared with digital filters
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