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Proceedings Paper

New compact Fourier transform spectrometer for the near-infrared and visible
Author(s): Manfred Zeidler; Peter Grosse
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Paper Abstract

In the near-infrared and visible (5000...25,000 cm-1) spectroscopy is often carried out by diffraction gratings. Fourier transform spectrometers need a high mechanical accuracy which could only be realized by a greater expense, corresponding to higher costs. But if we consider that for many applications a resolution of 50 cm-1 is sufficient, we could build an interferometer in a simple way. From the resolution it follows that a path difference of only 100 micrometers of the movable mirror is required, if a conventional Michelson interferometer is used. The idea is to make use of an ordinary piezoelectric translator doing this travel, which leads to a simple and low-cost construction. First measurements indicated that inaccuracies due to the mechanical design are below the tolerance limits (precision and reliability of the guide piece of the movable mirror). Furthermore, transmission spectra of different samples show good agreement to equivalent measurements done by a diffraction grating. So this apparatus could be an interesting alternative to some commercial instruments.

Paper Details

Date Published: 1 March 1992
PDF: 2 pages
Proc. SPIE 1575, 8th Intl Conf on Fourier Transform Spectroscopy, (1 March 1992); doi: 10.1117/12.56301
Show Author Affiliations
Manfred Zeidler, RWTH Aachen (Germany)
Peter Grosse, RWTH Aachen (Germany)

Published in SPIE Proceedings Vol. 1575:
8th Intl Conf on Fourier Transform Spectroscopy

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