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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 40, Iss. 33 — Nov. 20, 2001
  • pp: 6130–6135

Method for correcting the wavelength misalignment in measured ultraviolet spectra

Alain de La Casinière, Thierry Cabot, Mamadou Lamine Touré, Dominique Masserot, and Jacqueline Lenoble  »View Author Affiliations


Applied Optics, Vol. 40, Issue 33, pp. 6130-6135 (2001)
http://dx.doi.org/10.1364/AO.40.006130


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Abstract

A new method for correcting the wavelength misalignment in measured UV spectra is presented. It is based on a comparison between measured irradiances and irradiances computed from a radiative transfer code for a set of given atmospheric and solar conditions (250 < Dobson units < 450, 30° < solar zenith angle < 75°). Results of tests run with spectra recorded on a clear-sky day by two spectroradiometers in a French UV spectral network station are analyzed. Applying the method once reduces shift to less than 0.05 nm. The smoothing included in the method enables detection of aberrant irradiance values and then completion of an initial quality control of measured spectra. A technique for assessing the instruments’ slit function is also presented. The key algorithms needed to build a computer code based on this method are given.

© 2001 Optical Society of America

OCIS Codes
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.3940) Instrumentation, measurement, and metrology : Metrology
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(300.0300) Spectroscopy : Spectroscopy
(300.6170) Spectroscopy : Spectra
(300.6540) Spectroscopy : Spectroscopy, ultraviolet

History
Original Manuscript: December 11, 2000
Revised Manuscript: June 18, 2001
Published: November 20, 2001

Citation
Alain de La Casinière, Thierry Cabot, Mamadou Lamine Touré, Dominique Masserot, and Jacqueline Lenoble, "Method for correcting the wavelength misalignment in measured ultraviolet spectra," Appl. Opt. 40, 6130-6135 (2001)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-40-33-6130

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