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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 53, Iss. 19 — Jul. 1, 2014
  • pp: 4313–4319

Stray light correction of array spectroradiometers for solar UV measurements

Saulius Nevas, Julian Gröbner, Luca Egli, and Mario Blumthaler  »View Author Affiliations


Applied Optics, Vol. 53, Issue 19, pp. 4313-4319 (2014)
http://dx.doi.org/10.1364/AO.53.004313


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Abstract

An approach is presented to characterize and correct stray light in spectra measured with array spectroradiometers and caused by out-of-spectral range radiation. A prerequisite for out-of-range stray light correction is knowledge of the spectral irradiance not measured by the instrument itself. A way of solving this problem for solar UV measurements is shown. The effect of out-of-range stray light is especially important for solar UV spectroradiometers typically having a spectral range narrower than that of the silicon detectors in use. Two different types of instruments used for solar UV measurements were characterized and corrected for out-of-range and in-range stray light. As a hardware solution to the out-of-range stray light problem, a bandpass filter was fitted in one array spectroradiometer. Results of test measurements using this modified instrument are also shown.

© 2014 Optical Society of America

OCIS Codes
(120.3930) Instrumentation, measurement, and metrology : Metrological instrumentation
(120.3940) Instrumentation, measurement, and metrology : Metrology
(120.5630) Instrumentation, measurement, and metrology : Radiometry
(300.6190) Spectroscopy : Spectrometers
(010.5630) Atmospheric and oceanic optics : Radiometry

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: March 17, 2014
Revised Manuscript: May 27, 2014
Manuscript Accepted: May 28, 2014
Published: June 30, 2014

Citation
Saulius Nevas, Julian Gröbner, Luca Egli, and Mario Blumthaler, "Stray light correction of array spectroradiometers for solar UV measurements," Appl. Opt. 53, 4313-4319 (2014)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-53-19-4313


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References

  1. G. Seckmeyer, A. Bais, G. Bernhard, M. Blumthaler, S. Drüke, P. Kiedron, K. Lantz, R. McKenzie, S. Riechelmann, “Instruments to measure solar ultraviolet radiation Part 4: array spectroradiometers,” (World Meteorological Organization, 2010).
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  7. S. Nevas, M. Lindemann, A. Sperling, A. Teuber, R. Maass, “Colorimetry of LEDs with array spectroradiometers,” MAPAN—J. Metrol. Soc. India 24, 153–162 (2009).

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