| Autor: |
Salim SG; National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW, UK. saber.salim@nis.sci.eg, Fox NP, Theocharous E, Sun T, Grattan KT |
| Jazyk: |
angličtina |
| Zdroj: |
Applied optics [Appl Opt] 2011 Feb 20; Vol. 50 (6), pp. 866-75. |
| DOI: |
10.1364/AO.50.000866 |
| Abstrakt: |
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 spectral radiance, and then it is used at different temperatures to measure sources of different spectral radiances. These factors are expected to be problematic for nontemperature-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 effect of ambient temperature on a nontemperature-stabilized linear 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. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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