Photodetector Fast Spectral Response Estimation Using Black Body Radiation

Massimiliano Rossi; Riccardo Liberati; Alessio Del Paggio

doi:10.20944/preprints201905.0210.v1

Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Version 1 : Received: 15 May 2019 / Approved: 16 May 2019 / Online: 16 May 2019 (10:44:55 CEST)

We propose a method for the estimation of the spectral response of a photodetector, using only the variation of the temperature of a black body source without the need of an expensive monochromator or a circular filter. The proposed method is suitable especially for infrared detectors in which the cut – off wavelength and the responsivity vs. wavelength is not exactly known. The method provides a rough estimation of the curve S(l) solving a Fredholm integral equation of the first kind. The precision of this technique depends on the number of temperatures at which the detector output is measured. Some example is given in order to better explain the proposed technique.

Infrared; Photodetector; Black Body

Physical Sciences, Applied Physics

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Photodetector Fast Spectral Response Estimation Using Black Body Radiation

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