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Applied Optics

Applied Optics


  • Vol. 37, Iss. 36 — Dec. 20, 1998
  • pp: 8352–8360

Investigation of the wavelength accuracy of Brewer spectrophotometers

Julian Gröbner, David I. Wardle, C. Thomas McElroy, and James B. Kerr  »View Author Affiliations

Applied Optics, Vol. 37, Issue 36, pp. 8352-8360 (1998)

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The wavelength accuracy of the Brewer spectrophotometer in the 280–360-nm spectral range is improved by a new grating-drive mechanism and a new dispersion function derived from the Brewer geometry. With the new mechanism, the reproducibility of wavelength settings for spectral emission lines is better than 0.3 pm (0.0003 nm) and, with a thermally compensated version, the effect of temperature is less than 0.4 pm K-1. The new dispersion function fits spectral line positions better than the standard function and is less prone to extrapolation error. Applying the new function to data from four new and ten standard drives shows that the new drives perform as well as the best of the standard ones and much better than the majority.

© 1998 Optical Society of America

OCIS Codes
(010.4950) Atmospheric and oceanic optics : Ozone
(120.4140) Instrumentation, measurement, and metrology : Monochromators
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(300.6540) Spectroscopy : Spectroscopy, ultraviolet

Original Manuscript: July 1, 1998
Revised Manuscript: September 17, 1998
Published: December 20, 1998

Julian Gröbner, David I. Wardle, C. Thomas McElroy, and James B. Kerr, "Investigation of the wavelength accuracy of Brewer spectrophotometers," Appl. Opt. 37, 8352-8360 (1998)

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