Abstract

The original double-beam Michelson-type Fourier spectrometer at the University of Oulu has been partly modified so that a maximum resolution of slightly better than 0.010 cm⁻¹ between 20 cm⁻¹ and 1200 cm⁻¹ can be obtained. The resolution is determined as a halfwidth of an observed line. The accuracy of the line position is 0.0005 cm⁻¹ in favorable conditions. The Fourier spectrometer is connected on-line to a minicomputer, in order to make the fast Fourier transforms of interferograms of up to 10⁶ sampling points. The maximum optical path difference of the interferometer is about 1.5 m, giving a maximum theoretical resolution of 0.004 cm⁻¹.

© 1979 Optical Society of America

High resolution Fourier transform spectrometer (0.005 cm⁻¹) for the 0.6–100-μm spectral range

A. A. Balashov, V. S. Bukreev, N. G. Kultepin, I. N. Nesteruk, E. B. Perminov, V. A. Vagin, and G. N. Zhizhin
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R. D. Blatherwick, A. Goldman, B. L. Lutz, P. M. Silvaggio, and R. W. Boese
Appl. Opt. 18(22) 3798-3804 (1979)