New compact Fourier transform spectrometer for the near-infrared and visible

Manfred Zeidler; Peter Grosse

doi:10.1117/12.56301

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1 March 1992 New compact Fourier transform spectrometer for the near-infrared and visible

Manfred Zeidler, Peter Grosse

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Proceedings Volume 1575, 8th Intl Conf on Fourier Transform Spectroscopy; (1992) https://doi.org/10.1117/12.56301
Event: Eighth International Conference on Fourier Transform Spectroscopy, 1991, Lubeck-Travemunde, Germany

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.

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Manfred Zeidler and Peter Grosse "New compact Fourier transform spectrometer for the near-infrared and visible", Proc. SPIE 1575, 8th Intl Conf on Fourier Transform Spectroscopy, (1 March 1992); https://doi.org/10.1117/12.56301

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