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Atmospheric Measurement Techniques An interactive open-access journal of the European Geosciences Union
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Preprints
https://doi.org/10.5194/amt-2020-244
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-2020-244
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

  15 Sep 2020

15 Sep 2020

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This preprint is currently under review for the journal AMT.

The design and development of a tuneable and portable radiation source for in situ spectrometer characterisation

Marek Šmíd1, Geiland Porrovecchio1, Jiří Tesař1, Tim Burnitt2, Luca Egli3, Julian Grőbner3, Petr Linduška1, and Martin Staněk4 Marek Šmíd et al.
  • 1Czech Metrology Institute, Brno, 638 00, Czech Republic (Dept. of Optics, Prague)
  • 2Principal Optics, Woodley, Berkshire, RG5 4PZ, UK
  • 3Physikalisch-Meteorologisches Observatorium Davos/World Radiation Centre, Davos, 7260, Switzerland
  • 4Czech Hydrometeorological Institute, Hradec Kralove, 503 11, Czech Republic

Abstract. For spectroradiometers the characterisation of their wavelength scale and spectral bandwidth underpins substantially the quality of measured data. This characterisation can be performed using metrology-grade tuneable monochromatic sources, which are currently available only in a few laboratories world-wide. Yet in numerous applications only the in-field calibration is a feasible solution. We have designed and developed a Tuneable and Portable radiation Source (TuPS) in the wavelength range from 300 nm to 350 nm for the in-field characterization of Dobson and Brewer spectrometers wavelength scale and slit-function with uncertainties better than 0.02 nm in wavelength and with the bandwidth of emitted radiation smaller than 0.1 nm FWHM. The TuPS is designed such that only minor modifications of its optical system extends/shifts its spectral range towards visible and near-infrared spectral regions and thus expand its application for characterisation of any spectroradiometers in the relevant spectral region of interest.

Marek Šmíd et al.

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Marek Šmíd et al.

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