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Temperature and nonlinearity corrections for a photodiode array spectrometer used in the field.

Salim, S G R; Fox, N P; Theocharous, E; Sun, T*; Grattan, K T V* (2011) Temperature and nonlinearity corrections for a photodiode array spectrometer used in the field. Appl. Opt., 50 (6). pp. 866-875.

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Abstract

Temperature and nonlinearity effects are two important factors that limit the use of photodiode array spectrometers. Usually the spectrometer is calibrated at a known temperature against a reference source of a particular radiant power, and then it is used at different temperatures to measure sources of different radiant powers. These factors are expected to be problematic for non-temperature stabilized instruments used for in-the- field experiments, where the radiant power of the site changes continuously with the Sun tilt. This paper describes the temperature effect on a non-temperature stabilized photodiode array spectrometer over the temperature range from 5 °C to 40 °C. The nonlinearity effects on both signal amplification and different levels of radiant power have also been studied and are presented in this paper.

Item Type: Article
Keywords: Photodiode array spectrometers, Temperature correction, linearity
Subjects: Optical Radiation and Photonics
Optical Radiation and Photonics > Environment and Climate Change
Last Modified: 02 Feb 2018 13:14
URI: http://eprintspublications.npl.co.uk/id/eprint/4905

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